Download ((better)) Microsoft.ace.oledb.12.0 Provider For Both 64-bit May 2026

To download the Microsoft ACE OLEDB 12.0 provider (the Access Database Engine) for 64-bit systems, follow the links below.

Step 1: Install the 64-bit version first (as usual)

• Potential registry conflicts.
• Risk of breaking existing Office installations.
• Unpredictable behavior in linked tables.

Important Note on the "Both" Keyword:

Error 1: "The provider is not registered" after installation

Part 6: Testing Your Connection (The Proof)

3. EPPlus or ClosedXML (for .NET)

2. For 32-bit Systems