Work Download Microsoft.ace.oledb.12.0 Provider: For Both 64-bit

# Run this in C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe $conn = New-Object System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\test.xlsx;Extended Properties='Excel 12.0 Xml;HDR=YES'") $conn.Open() Write-Host "32-bit connection successful" $conn.Close()

C:\Users\Name\Downloads\AccessDatabaseEngine_x64.exe /passive for the 32-bit version if needed. Registry Fix (If needed) download microsoft.ace.oledb.12.0 provider for both 64-bit

: Double-click the file and follow the setup prompts. ⚠️ The "Both 64-bit and 32-bit" Catch # Run this in C:\Windows\SysWOW64\WindowsPowerShell\v1

| Error Message | Likely Cause | Solution | |---------------|--------------|----------| | "Provider not registered" | Bitness mismatch or not installed | Install correct bit version. | | "Cannot update. A newer version is already installed" | Office 365 or newer ACE engine present | Uninstall newer engine first or use /passive . | | "Microsoft.ACE.OLEDB.12.0 is not recognized" | Missing redistributable | Download and install from official link. | | "External table is not in the expected format" | File corruption or Excel version mismatch | Save file as .xlsx or repair file. | | " cannot start your application. The workgroup information file is missing" | Access security issue | Ensure .mdw file path is correct in connection string. | | | "Cannot update