Microsoft has not released a 64-bit version of the Jet driver. It cannot be "downloaded" to act as a 64-bit engine.
Legacy database engines are susceptible to security vulnerabilities when opening unverified, older database files. Only open files from trusted sources.
If you developed the application yourself in Visual Studio, you must force the application to run in 32-bit mode. Open your project in . download microsoft jet oledb 4.0
If your environment is correctly configured for 32-bit execution, use the following standard connection strings to connect to your data sources. For Microsoft Access (.mdb):
If you absolutely must use Microsoft.Jet.OLEDB.4.0 (for legacy software that cannot be rewritten), here is how to enable it on modern Windows 10/11. Microsoft has not released a 64-bit version of
"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\myFolder\myOldDatabase.mdb;Persist Security Info=False;"
32-bit (x86) only. It has no native 64-bit version. Only open files from trusted sources
Downloading and installing Microsoft Jet OLE DB 4.0 is a straightforward process that can help resolve connectivity issues with your Access database or Excel spreadsheet. By following the steps outlined in this post, you should be able to get up and running with this essential driver. If you encounter any issues or have questions, feel free to leave a comment below.
Change application target to or enable 32-bit apps in IIS. Need true 64-bit database operations
What or software is throwing the error? Are you running a desktop application or a web server ? Do you have the ability to recompile the source code ?
