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Microsoft Ace Oledb 12.0 Free Download

  • Free Migration Service. The Microsoft.ACE.OLEDB.12.0 provider is not registered on the local machine. Once you click download button, it will prompt you to.
  • Nov 16, 2021 Microsoft.ace.oledb.12.0 Driver Download 2016; The ‘Microsoft.ACE.OLEDB.12.0’ provider is not registered on the local machine running windows 8.1 with sp1 x64 can someone please advise how you register it. Hi all, I'm getting the following error: the 'microsoft.ace.oledb.12.0' provider is not registered on this machine with Office 2016.
  • Microsoft.ace.oledb.12.0 Driver Download 2016; The ‘Microsoft.ACE.OLEDB.12.0’ provider is not registered on the local machine running windows 8.1 with sp1 x64 can someone please advise how you register it. Hi all, I'm getting the following error: the 'microsoft.ace.oledb.12.0' provider is not registered on this machine with Office 2016.

Download Microsoft OLE DB Driver for SQL Server - OLE …

The ‘Microsoft.ACE.OLEDB.12.0’ provider is not registered on the local machine. I needed both the 32-bit and the 64-bit adapters to cover my various use cases. I started by installing the 64-bit Microsoft Access Database Engine 2010 Redistributable. If you have ever attempted this, you know there is a secret.

Details: Download Microsoft OLE DB Driver for SQL Server (x86) Version information. Release number: 18.6.0; Released: June 18, 2021; Note. If you are accessing this page from a non-English language version, and want to see the most up-to-date content, please select Read in English at the top of this page. oledb excel connection string

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› Url: https://docs.microsoft.com/en-us/sql/connect/oledb/download-oledb-driver-for-sql-server Go Now

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Download Microsoft Access Database Engine 2016

Details: If you are an application developer using OLEDB, set the Provider argument of the ConnectionString property to “Microsoft.ACE.OLEDB.12.0” If you are connecting to Microsoft Office Excel data, add the appropriate Extended Properties of the OLEDB connection string based on the Excel file type: File Type (extension) Extended Properties excel oledb driver excel 2016

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› Url: https://www.microsoft.com/en-us/download/details.aspx?id=54920 Go Now

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Microsoft Ace Oledb 12.0 Driver Download

Details: The ‘Microsoft.ACE.OLEDB.12.0’ provider is not registered on the local machine running windows 8.1 with sp1 x64 can someone please advise how you register it. Hi all, I'm getting the following error: the 'microsoft.ace.oledb.12.0' provider is not registered on this machine with Office 2016. microsoft excel oledb driver

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› Url: https://rvload.curveapp.co/microsoft-ace-oledb-120-driver-download/ Go Now

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Download Microsoft.ACE.OLEDB.12.0 provider for 32bit and 64bit

Details: Here Mudassar Ahmed Khan has explained how to download the Microsoft.ACE.OLEDB.12.0 provider for 32bit and 64bit. In order to download the Microsoft.ACE.OLEDB.12.0 provider for 32bit and 64bit, you will need to download the Microsoft Access Database Engine 2010 Redistributable file. TAGs: ASP.Net, Excel, Tips, OLEDB oledb for access

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How to obtain the latest versions of MSOLAP

Details: This article describes the latest versions of Microsoft Analysis Services OLE DB Provider for Microsoft SQL Server (MSOLAP) and where you can download the providers. Microsoft Excel uses MSOLAP to connect to Microsoft SQL Server. However, Excel cannot connect to a SQL Server Analysis Services database if an incorrect version of MSOLAP is used microsoft access oledb provider

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› Url: https://support.microsoft.com/en-us/topic/how-to-obtain-the-latest-versions-of-msolap-7e83308f-535d-2919-bc4a-20d402f87722 Go Now

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The OLE DB provider 'Microsoft.ACE.OLEDB.12.0' has not

Details: Now, when you visit the above download link and right after you click on the “Download” button, you are presented with 2 options. So, you can either download and install the 32-bit version of Microsoft Access Database Engine 2016 Redistributable (file name “accessdatabaseengine.exe”), or the 64-bit version (file name ace oledb 2016

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OLE DB Providers Overview Microsoft Docs

Details: Microsoft OLE DB Provider for AS/400 and VSAM. Allows access to mainframe AS/400 or VSAM data through Microsoft's object-based OLE DB data access technology. For more information, see the SNA Server resources on Microsoft TechNet. Any. Microsoft Cursor Service for OLE DB. Caches result sets on the client or the server. microsoft ace for office 2016

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› Url: https://docs.microsoft.com/en-us/previous-versions/windows/desktop/ms709836(v=vs.85) Go Now

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Microsoft OLE DB Provider for Microsoft Access database …

Details: OLE DB Provider for Microsoft Access database engine: connection string Creating a new Excel workbook and worksheet with OLE DB, SQL and C# The ProgId for the Access Database engine provider is Microsoft.ACE.OLEDB.12.0 .

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› Url: https://renenyffenegger.ch/notes/development/databases/OLE-DB/provider/Microsoft-Access-database-engine/index Go Now

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Excel 2016 Odbc Driver Download 64 Bit

Details: Visual Studio; SDKs; Trial software. Tthere is no excel driver listed in odbc driver list. Do i have to install 64 bit odbc driver for excel? Excel for Office 365 Excel 2016 Excel 2013 Excel 2010 Excel 2007. For information about installing an ODBC driver or data source driver. Download Center.

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› Url: https://bloglife.livbeauty.co/excel-2016-odbc-driver-download-64-bit/ Go Now

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Installing the Microsoft.ACE.OLEDB.12.0 Provider for Both

Details: If you try to do either of those things without the ACE OLE DB provider you will get a message like the one below. The ‘Microsoft.ACE.OLEDB.12.0’ provider is not registered on the local machine. I needed both the 32-bit and the 64-bit adapters to cover my various use cases.

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› Url: https://datasavvy.me/2017/07/20/installing-the-microsoft-ace-oledb-12-0-provider-for-both-64-bit-and-32-bit-processing/ Go Now

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excel - How to get a list of installed OLE DB providers

Details: OLEDB provides a class that will enumerate all OLE DB providers for you. Microsoft OLE DB Root Enumerator 🕗. ProgID: 'MSDAENUM'; clsid: {c8b522d0-5cf3-11ce-ade5-00aa0044773d}; CLSID_OLEDB_ENUMERATOR (from msdaguid.h in the sdk); The steps

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› Url: https://stackoverflow.com/questions/37849262/how-to-get-a-list-of-installed-ole-db-providers Go Now

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Teradata OLE DB Provider Teradata Downloads

Details: 2) Download & install OLE DB Provider package (from this page). Installation instructions for versions 14.00.00.xx and earlier : 1) Download the OLE DB Provider for Teradata bundle (from this page) containing packages for OLE DB Provider for Teradata, Shared ICU Libraries for Teradata and Teradata GSS. Install all 3 packages in the order of ICU

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› Url: https://downloads.teradata.com/download/connectivity/ole-db-provider Go Now

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Excel connection strings - ConnectionStrings.com

Details: Excel 97-2003 Xls files with ACE OLEDB 12.0. You can use this connection string to use the Office 2007 OLEDB driver (ACE 12.0) to connect to older 97-2003 Excel workbooks. Provider = Microsoft.ACE.OLEDB.12.0; Data Source = c:myFoldermyOldExcelFile.xls; Extended Properties = 'Excel 8.0; HDR = YES'; Excel 97 Excel 2000 Excel 2002 Excel 2003.

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Info - Microsoft ACE OLEDB 12.0 - ConnectionStrings.com

Details: Jet for Access, Excel and Txt on 64 bit systems The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine Open a password-protected Excel workbook Formating Rules for Connection Strings Connection Strings Explained Store Connection String in Web.config Connection Pooling The Provider Keyword, ProgID, Versioning and COM CLSID Explained …

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› Url: https://www.connectionstrings.com/ace-oledb-12-0/info-and-download/ Go Now

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How to download/install microsoft.ace.oledb driver for

Details: How to download/install microsoft.ace.oledb driver for Microsoft office 2019. I am using MS-Office 2019. I need to perform Filter operation on Excel using Automation Anywhere. But in my database provider i cannot find microsoft.ace.oledb driver .

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Excel Workbook: The 'Microsoft.ACE.OLEDB.12.0' provider is

Details: Excel Workbook: The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine. The 64-bit version of the Access Database Engine 2010 Access Database Engine OLEDB provider may be required to read this type of file.

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› Url: https://community.powerbi.com/t5/Issues/Excel-Workbook-The-Microsoft-ACE-OLEDB-12-0-provider-is-not/idi-p/616119 Go Now

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How to connect to Excel 2016 with oledb.

Details: I get this exception: System.InvalidOperationException: 'De Microsoft.ACE.OLEDB.12.0-provider is not registered I have to install the provider I guess. Isn't it standard in Windows ? If I deploy this should I install the provider on every client pc ? ACE drivers are not installed by default.

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› Url: https://social.msdn.microsoft.com/Forums/vstudio/en-US/602f726d-50d3-468b-9e13-fd8c8eaea2a2/how-to-connect-to-excel-2016-with-oledb Go Now

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Excel 2016 Odbc Driver

Sql Server Microsoft Ace Oledb 12.0 Download

Details: The instructions below apply to Excel 2016, 2019 and Office 365 fo Mac. These versions of Excel do provide an ODBC driver for connecting to SQL Server Databases. On the Data tab, click New Database Query > SQL Server ODBC.Then use the dialog boxes to …

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› Url: https://flexpdt.innospeed.co/excel-2016-odbc-driver/ Go Now

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.net - Where/how can I download (and install) the

Details: I've got a 32 bit .net 2.0 app that uses the Jet OLEDB 4.0. It runs fin on Windows 8 32 bit, but not on the 64 bit. on 64 bit I'm getting an error: 'Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine. at System.Data.OleDb.OleDbServicesWrapper.GetDataSource(OleDbConnectionString constr, …

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Microsoft.ace.oledb.12.0 Dll Free Download

Office 365 Excel Proplus , OLEDB connectionstring

Details: Office 365 Excel Proplus , OLEDB connectionstring. Our customers upgraded to Office 365 Excel Proplus and send excel files. We read excel file using OleDB connection, all lower version are working. Provider=Microsoft.ACE.OLEDB.16.0;Data Source='d:temp.xlsx';Extended Properties='Excel 16.0 Xml;HDR=True;IMEX=0.

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› Url: https://answers.microsoft.com/en-us/msoffice/forum/all/office-365-excel-proplus-oledb-connectionstring/ebd24ba8-3f66-40d1-920e-84ec9e7a170c Go Now

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Microsoft.ACE.OLEDB.12.0 provider is not registered on

Details: The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine . On a 64-Bit SharePoint system you will normally get the 'The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine.' message if you try to connect to Office data like Excel or Access or SQL Server via OLEDB.That's because no 64-Bit MDAC driver is installed by default.

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The ‘Microsoft.Jet.OLEDB.4.0’ provider - Excel How To

Details: in your application, update the connection string from “ Provider=Microsoft.Jet.OLEDB.4.0; ” to “ Provider=Microsoft.ACE.OLEDB.12.0; ”. It is possible to open Excel, Access and text files on 64-bit systems. You can either configure your app to go 32-bit or you can change your application to use the new 64-bit drivers.

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› Url: https://www.excelhowto.com/the-microsoft-jet-oledb-4-0-provider-is-not-registered-on-the-local-machine/ Go Now

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Need a Data Provider for Excel (2003, 2007, 2010) that

Details: Currently my app uses Jet 4 or ACE 12 OLEDB data providers depending on the version of the Excel files but it seems that jet is nologer an option on Windows 7. Is there a data provider that I can use to read data from Excel 2003,2007,2010 that will work on …

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Install and Test OLE DB Provider - HelpSystems

Details: In the list of Providers, select Microsoft Jet 4.0 OLE DB Provider and click Next. Note : If you do not see this in the list of OLE DB Providers, you must download and install the latest version of the MDAC from the Microsoft Web site.

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› Url: https://community.helpsystems.com/knowledge-base/sequel-knowledge-base/viewpoint/install-and-test-ole-db/ Go Now

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Download Microsoft.ACE.OLEDB.12.0 provider for 32bit and

Details: In this article we will discuss Display data in GridView (Grid) in ASP.Net Core.. Here we will explain how to download the Microsoft.ACE.OLEDB.12.0 provider for 32bit and 64bit, you will need to download the Microsoft Access Database Engine 2010 Redistributable file.

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The 'Microsoft.ACE.OLEDB.15.0' provider is not registered

Details: The 'Microsoft.ACE.OLEDB.15.0' provider is not registered on the local machine. (System.Data) I am using SQL Server Import Wizard to import data from Excel (2013).

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› Url: https://answers.microsoft.com/en-us/msoffice/forum/all/the-microsoftaceoledb150-provider-is-not/6430a47d-263c-43af-aabc-f134da4b830e Go Now

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c# - Reading excel file using OLEDB Data Provider - Stack

Details: I am using OLEDB Data Provider to read excel file, but the problem is that in excel sheet some cloumn has an invalid value for example instead of number string is there, When I read this invalid value I get an empty string instead of actual value. for above screenshot when i read value john getting empty string.

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› Url: https://stackoverflow.com/questions/18511576/reading-excel-file-using-oledb-data-provider Go Now

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Microsoft ACE OLEDB 12.0 Connection Strings

Details: Excel 97-2003 Xls files with ACE OLEDB 12.0. You can use this connection string to use the Office 2007 OLEDB driver (ACE 12.0) to connect to older 97-2003 Excel workbooks. Provider = Microsoft.ACE.OLEDB.12.0; Data Source = c:myFoldermyOldExcelFile.xls; Extended Properties = 'Excel 8.0; HDR = YES';

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› Url: https://www.connectionstrings.com/ace-oledb-12-0/ Go Now

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Exporting Archived Data from WinCC with the OLE DB Provider

Details: The WinCC OLE DB Provider enables transparent access to the WinCC archive data. Figure 1-2 External data format Archive with Excel • Export of archive data via MS SQL Server Management Studio . 1 Introduction Exporting Archived Data from WinCC with the OLE DB Provider a download in the application example. The system has the operating

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microsoft.ace.oledb.12.0 - Microsoft Community

Details: Hi all, I'm getting the following error: the 'microsoft.ace.oledb.12.0' provider is not registered on this machine with Office 2016. Can you guys help? Tom

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› Url: https://answers.microsoft.com/en-us/msoffice/forum/all/microsoftaceoledb120/7a8d1df5-057b-4d4f-9a50-6d0ff6d85e6d Go Now

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Install and configure Informix OLE DB Provider

Details: IBM® Informix® OLE DB Provider is distributed with IBM Informix Connect and the IBM Informix Client Software Development Kit (Client SDK).. When you install the Client SDK, IBM Informix OLE DB Provider is installed by default. The installation includes other necessary components and performs required updates to the registry.

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› Url: https://www.ibm.com/docs/en/SSGU8G_12.1.0/com.ibm.oledb.doc/ids_oledb_008.htm Go Now

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SQL Server - How to Install the Microsoft.ACE.OLEDB.12.0

Details: In this post, I'll talk a little about the two most commonly used OLEDB drivers in SQL Server for file integrations, especially Excel, which are Microsoft.ACE.OLEDB.12.0 and Microsoft.Jet.OLEDB.4.0. Once installed on the server, they allow you through the database to be able to enter, query, update, and delete Excel spreadsheet data and text

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› Url: https://en.dirceuresende.com/blog/sql-server-how-to-install-microsoft-ace-oledb-12-0-and-microsoft-jet-oledb-4-0-drivers/ Go Now

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Read and Write Excel Documents Using OLEDB - CodeProject

Details: I don't see any options and/or changes to Microsoft.Office.Interop.Excel.dll which would account for this. I am/have been reading 97 - 2003 .xls files with out issue until this month. I am using the standard excel 97 connection: Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:MyExcel.xls;Extended Properties='Excel 8.0;HDR=Yes;IMEX=1'

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› Url: https://www.codeproject.com/tips/705470/read-and-write-excel-documents-using-oledb Go Now

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Excel driver on Azure Microsoft.ACE.OLEDB.12.0 error

Details: If you are trying use the Excel Driver provided with Microsoft Access Database Engine 2010 Redistributable Click here to download and getting following message. The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine. So is it possible to have this driver on AZURE APP Service or web app?

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› Url: https://blog.certificationskart.com/windows/excel-driver-on-azure-microsoft-ace-oledb-12-0-error-solution/587/ Go Now

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dotnetstep: Create and Read Excel File Using Oledb provider

Details: When working with excel file for data mining or export data to excel many time required to read excel file and also write file. One can use Oledb Provider to connect existing file or create new excel file for report in .net. 1. Get Sheets Name from Excel File. System.Data.OleDb.OleDbConnection conn = new System.Data.OleDb.OleDbConnection (); try.

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IBM OLE DB Provider for DB2

Details: The OLE DB architecture defines OLE DB consumers and OLE DB providers. An OLE DB consumer is any system or application that uses OLE DB interfaces; an OLE DB provider is a component that exposes OLE DB interfaces. The IBM OLE DB Provider for DB2, whose provider name is IBMDADB2, enables OLE DB consumers to access data on a DB2 …

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SQL SERVER - How to Download Microsoft OLE DB Provider for

Details: If you are using Oracle data sources, you should migrate to the Oracle-supplied provider and driver. Microsoft OLEDB Provider for Oracle (msdaora.dll) and Microsoft ODBC driver for Oracle (msorcl32.dll) are built by using Oracle Call Interface (OCI) version 7.

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› Url: https://blog.sqlauthority.com/2016/12/17/sql-server-download-microsoft-ole-db-provider-oracle-msdaora-64-bit/ Go Now

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Solved: DataSource.NotFound - Excel Workbook: The 'Microso

Details: DataSource.NotFound - Excel Workbook: The 'Microsoft.ACE.OLEDB.12.0'. 10-04-2021 04:41 AM. I'm getting the following error, when trying to refresh a dataset, which is connected to an Azure Storage Gen2 Container. Per my understanding (see image below), the data is not going through any of our gateways instead going direct to the Azure container.

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› Url: https://community.powerbi.com/t5/Service/DataSource-NotFound-Excel-Workbook-The-Microsoft-ACE-OLEDB-12-0/m-p/2113692 Go Now

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2970410 - MS Excel and MS Access connection missing in

Download

Details: To download and install the 64bit version of the Microsoft Office ODBC drivers, go to the Microsoft website, and search for: 'Microsoft Access Database Engine'. Then click 'Finish'. Add an ODBC DSN Name and select the MS Excel or MS Access document you want to report from. Click 'OK' to create the ODBC DSN. In Crystal Reports, create a new report.

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› Url: https://userapps.support.sap.com/sap/support/knowledge/en/2970410 Go Now

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Read Write Excel file with OLEDB in C# (without Interop)

Details: Provider is OLEDB provider for Excel file, e.g., Jet.OLEDB.4.0 is for XLS file and ACE.OLEDB.12.0 for XLSX file Data Source is the file path of Excel file to be read Connection string also contains 'Extended Properties' like Excel driver version, HDR Yes/No if source Excel file contains first row as header

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› Url: https://www.codingame.com/playgrounds/9014/read-write-excel-file-with-oledb-in-c-without-interop Go Now

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The 'Microsoft.ACE.OLEDB.12.0' provider is not registered

Details: Once you click Download it will prompt you to select the architecture i.e. 32 BIT (x86) or 64 BIT (x64).

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› Url: https://www.aspsnippets.com/Articles/The-MicrosoftACEOLEDB120-provider-is-not-registered-on-the-local-machine.aspx Go Now

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Introduction to Oracle Provider for OLE DB

Details: The design of OLE DB centers around the concept of a consumer and a provider. Figure 1-1 is an illustration of the OLE DB system. The consumer represents the traditional client. The provider places data into a tabular format and returns it to the consumer.

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› Url: https://docs.oracle.com/en/database/oracle/oracle-database/19/oledb/introduction-to-oracle-provider-for-oledb.html Go Now

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How to query Excel data using SQL Server linked servers

Details: In the Product name box, put the name of the OLE DB data source to add as a linked server (e.g. Excel). In the Data source box the type the full path and file name of the Excel file (e.g. C:TestExcel_Data.xlsx). For the Provider string field, enter Excel 12.0 :

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› Url: https://www.sqlshack.com/query-excel-data-using-sql-server-linked-servers/ Go Now

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SQL SERVER - FIX - Export Error - 'Microsoft.ACE.OLEDB.12

Details: Hi, I am facing the same issue and then Install the 64 bit ACEOLEDB.DLL as well. But still not able to import the data from excel. Post installation of ACEOLEDB.DLL, xp_enum_oledb_providers does not list the new provider entry

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› Url: https://blog.sqlauthority.com/2015/06/24/sql-server-fix-export-error-microsoft-ace-oledb-12-0-provider-is-not-registered-on-the-local-machine/ Go Now

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Connecting to and Importing from Excel - Connection Strings

Details: Excel 97-2003 Xls files with ACE OLEDB 12.0 You can use this connection string to use the Office 2007 OLEDB driver (ACE 12.0) to connect to older 97-2003 Excel workbooks. Provider=Microsoft.ACE.OLEDB.12.0;Data Source=c:myFoldermyOldExcelFile.xls;

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› Url: https://leansoftware.net/Help/Excel-Database-Tasks/Reference/Connection-strings/Excel-Connection-Strings.aspx Go Now

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Error: The 'Microsoft.ACE.OLEDB.12.0' provider is not

Details: Resolution Process. These steps should be tried in the following order until the issue is resolved. Make sure the Jet Data Manager and Excel have the same bit-rate. If Excel is 32-bit, you will need to install the 32-bit version of the Jet Data Manager. If Excel is 64-bit, you will need to install the 64-bit version of the Jet Data Manager.

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› Url: https://support.jetglobal.com/hc/en-us/articles/219401847-Error-The-Microsoft-ACE-OLEDB-12-0-provider-is-not-registered Go Now

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Solved: Get Data from Access Database results in OLEDB 12

Details: Hi all, I'm trying to connect to an Access Database stored in my OneDrive. When i choose the location and click next I get the following error: An exception occurred: DataSource.NotFound: Microsoft Access: The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine. The 64-bit v

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Microsoft Ace Oledb 12.0 Free Download

› Url: https://powerusers.microsoft.com/t5/Microsoft-Dataverse/Get-Data-from-Access-Database-results-in-OLEDB-12-0-error/td-p/475495 Go Now

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I investigated Microsoft.ACE.OLEDB.12.0 and have plenty of artefacts and findings. In case you haven't met this component it allows data to be read and written to Excel worksheets using SQL technology.

Nomenclature

As far as I can see ACE stands for Access Connectivity Engine. This wikipedia article is a good web page which highlights the history of the name.

COM Registry entries

Some time back (with some help from StackOverflow) I got theATL C++ Sample OLEDB Provider compiled and working. From that experience I can tell you that every provider string is in fact a COM Prog ID. This means we call write code like this to test the installation...

It also means if we scan the registry for the Prog ID 'Microsoft.ACE.OLEDB.12.0' then we can find other details. I have placed a registry export of the COM registry entries in Appendix A.

From the details it can be seen that the ProgId is 'Microsoft.ACE.OLEDB.12.0' whilst the fuller name is 'Microsoft Office 12.0 Access Database Engine OLE DB Provider' and it is implemented in the executable ACEOLEDB.DLL. This gives us some search terms to google on.

Installation

If you need to install this then you must download the Microsoft Access Database Engine 2010 Redistributable . The accompanying explanatory text says this is not a replacement for Jet saying one should use SQL Server Express Edition but to be honest I think many of us do see Microsoft.ACE.OLEDB.12.0 as a Jet replacement.

Also on that download page there some help about how to use an Extended Property in the connection string to specify the correct file format version.

As it turns out, one can supply a wider range of values than those shown above, i.e. non-Excel file formats. Appendix D shows a screenshot of the registry which I believe shows all the valid values, they are all ISAM Formats.

Pitfall - Workbooks needs to be saved

I suspect the code in the provider is contingent on the workbook's file extension and it will complain if it has no file extension. When you create a workbook, it is just 'Book1' ; it has no file extension until it has been saved at least once. This pitfall is easily countered with a line of defensive code to inspect the workbook's file extension ...

... or ...

Connection Strings Resources

An excellent resource for how to build a connection string for any data provider is www.connectionstrings.com and on that link one can see connection strings for historic versions of Excel. Also on that page are details of extended properties.

Jet Extended Properties

I'd like to compile a list of extended properties that relate to Microsoft.ACE.OLEDB.12.0 . I suspect many of them are inherited from the Jet. So here is a list of Jet extended properties courtesy of Working with MS Excel(xls / xlsx) Using MDAC and Oledb - CodeProject, a great article that I won't try and replicate.

Looks like Extended Properties needs enclosing double quotes (in some cases at least).

  • HDR - Short for Header, if YES then the top row are like column headers and interpreted as field names.
  • ReadOnly
  • FirstRowHasNames - different way to do same as HDR
  • MaxScanRows - data types are inferred from n rows, this sets n
  • IMEX - I'm guessing this is short for Import/Export and is also used in column type inference

Related to IMEX is ImportMixedTypes which I have seen in an Microsoft.ACE.OLEDB.12.0 connection string but not in a Jet connection string. For Jet and Microsoft.ACE.OLEDB.12.0 ImportMixedTypes is a registry entry but it also looks like supplying ImportMixedTypes in the Microsoft.ACE.OLEDB.12.0 connection string allows an override. For explanation of ImportMixedTypes here is another great article, this time at dailydoseofexcel.com, Daily Dose of Excel - External Data – Mixed Data Types .

Pitfall - The Problem of Type Inference

So the OLEDB Provider infers a column's data type from its contents, sampling the data. I don't much like this, I'd prefer a way to specify the data type but I have yet to find a way to do this. Perhaps it is best to ensure the data in the cells is consistent, we can lock sheets and control access to ensure a user does not corrupt the data but then that creates a need to show a separate data entry form. I will mull this. In the meantime I'd advise you are very disciplined that any data you write is type consistent for that column.

Access Connectivity Engine

So I have discovered another bunch of registry entries which I placed in Appendix B. So there is another dll at work here, ACEEXCL.DLL. I will try to investigate how ACEEXCL.DLL interacts with ACEOLEDB.DLL. UPDATE: I solved this in Appendix D!

Pitfall - Pass CursorTypeEnum.adOpenKeyset or CursorTypeEnum.adOpenStatic When Opening a Recordset

Even after correctly forming a connection strings I have still had some issues using this OLEDB provider. So in in my use case when calling the Recordset.Open method it is critical to pass the right enumeration value. CursorTypeEnum.adOpenDynamic and CursorTypeEnum.adOpenForwardOnly did not throw errors they simply returned an empty recordset! This matters because I believe one of them is the assumed default. I needed to pass either CursorTypeEnum.adOpenKeyset or CursorTypeEnum.adOpenStatic to get any rows back.

Pitfall - Better To Specify an Exact Range Than a Whole Sheet

Even after sorting a connection string and CursorTypeEnum parameter one can still get bugs. If a whole sheet is specified then it will infer data from the whole Worksheet.UsedRange. This means if you dirty your cells on the sheet (by entering anything and deleting them) then that cell and all those between it and $A$1 will be implied to belong to the table. So it is better to find the range with [A1].CurrentRegion.Address and either (1) define a name over that range and pass range name into the SQL or (2) used the explicit address of the range, e.g. $A$1:$B$3

Sample Code to Open a Recordset

So now we know where the pitfalls lie we can write some defensive sample code. This code opens a recordset and prints out its contents. PLEASE USE A FRESH NEW WORKBOOK! There is some setup code to write some data to a sheet in SetUpSomeData() so best to use a new workbook but remember to save the workbook at least once.

The code demonstrates the following points ...

  • It defends against the pitfalls of unsaved workbooks;
  • it supplies a working CursorTypeEnum;
  • it restricts the cells to select, by two different methods (1) by name and (2) by cell address

As a bonus I have added some code in ReadExcelCatalog which demonstrates using the ADOX library to read schema information so one can tell exactly what the OLEDB provider is inferring for a column type. Enjoy!.

Links

Appendix A - COM Registry entries

It always useful to poke around in the registry to see what makes something tick, here is a registry export of the related keys. It turns out there is a second bunch of registry keys to tune the behaviour (page down). The following set of registry keys fulfil the COM registration requirements for OLEDB providers.

Appendix B - Access Connectivity Engine Registry entries

So I have discovered another bunch of registry entries which I found after discovering this page Initializing the Microsoft Excel Driver -MSDN.

Appendix C - Access Connectivity Engine Files and Dependencies

So there is a whole bunch of files prefixed with ACE*.DLL which look related to Access Connectivity Engine, for me they are located in

which looks like some sort of virtualised file system (is that what the vfs stands for?). Anyway, here is the list

I do not know what ACEES.DLL or ACEWDAT.DLL are but all the other files we can guess at their purpose.

We know the route into the code starts with COM and ACEOLEDB.DLL (see Appendix A), looking at the entry points for ACEOLEDB.DLL we see the classic COM entry points

If we look at the entry point for ACEEXCL.DLL we see the classic COM entry points

so very much a COM DLL. I wonder what classes are created and passed out by these DLLs. OLEVIEW sheds no light on this or ACEOLEDB.DLL

Appendix D - ISAM Formats (first term of Extended Properties) Map to Engines

Below is a screenshot of the registry which I believe shows all the valid values for the first term of the Extended Properties. They are all ISAM Formats.

Looking down the list of Value Data pairs for the given key, 'Excel 12.0 Macro', we can see one entry 'Engine' with 'Excel' as the string data. The 'HTML Export' and 'HTML Import' keys also have 'Engine' Values with 'Text' as the string data. In another screenshot we can see that they must be mapping to the keys under the Engines key. I have drawn some mapping lines (sorry no arrow heads).

Let's look at what is the Excel engine key. Voila, it tells which DLL to load to handle requests for Excel in the win32 value ...ACEEXCL.DLL . The Value-Data pairs shown below in the next screenshot have already been detailed in Appendix B but it is only now that I have pieced together the logic sequence to the load the right 'engine' file.