AccessDatabaseEngine_x64.exe /quiet /norestart
After the installation finishes, you may need to . Alternative: Installing Both 32-bit and 64-bit Together
If you have 32-bit Office installed, Microsoft will prevent you from installing the 64-bit Access Database Engine, throwing an error saying, "You cannot install the 64-bit version of Microsoft Access Database Engine 2010 because you currently have 32-bit Office products installed."
If you specifically require the 2016 version, you would look for AccessDatabaseEngine_X64.exe for 2016, but note that your connection string might need to be updated to Microsoft.ACE.OLEDB.16.0 . Sticking to the 2010 download ensures your existing connection strings (referencing 12.0) work immediately.
This error happens because the necessary driver—the —is missing, specifically for the architecture (32-bit or 64-bit) that your application is running. download microsoft.ace.oledb.12.0 provider for both 64-bit
If you have a 32-bit version of Microsoft Office installed (like Word or Excel) and you try to run the 64-bit installer ( AccessDatabaseEngine_X64.exe ), you will get a blocking error: "You cannot install the 64-bit version of Microsoft Access Database Engine because you currently have 32-bit Office products installed." How to Force Install Both 32-bit and 64-bit Providers
Before integrating this provider into a production application, be aware of its official design limitations. Microsoft distributes the ACE Redistributable to support the following scenarios:
The complexity arises because Microsoft distributes : one for 32-bit (x86) and one for 64-bit (x64). You cannot run both side-by-side by default.
After installation, verify that the provider is properly registered on your local machine. Verifying via SQL Server (Linked Servers) If you are using SQL Server Management Studio (SSMS): Expand > Linked Servers > Providers . AccessDatabaseEngine_x64
If you absolutely need both providers on the same machine (e.g., supporting legacy and modern apps), use the switch:
Microsoft Access Database Engine 2010 Redistributable
The Microsoft.ACE.OLEDB.12.0 provider is part of the , a component that allows non-Microsoft Office applications to read data from Microsoft Office files like Excel ( .xlsx ) or Access ( .accdb ). While Microsoft has increasingly moved toward version 16.0 (Office 2016 and later), many legacy systems still explicitly require the 12.0 provider. Primary Download Sources
If your app is , use the AccessDatabaseEngine_X64.exe . If your app is 32-bit , use the AccessDatabaseEngine.exe . This error happens because the necessary driver—the —is
The ACE Provider essentially acts as a bridge, enabling your code to treat these Office files like a database.
For 32-bit:
Right-click the provider, select , and ensure Allow inprocess is checked. Fixing the Registry for Office Click-to-Run (M365)