Download Microsoft.ace.oledb.12.0 Provider For Both 64-bit [exclusive]

using (OleDbDataReader reader = command.ExecuteReader())

The error “Microsoft.ACE.OLEDB.12.0 provider is not registered” is completely solvable. By matching bitness and using the official Microsoft downloads, you can restore full Office file access to your applications within minutes. download microsoft.ace.oledb.12.0 provider for both 64-bit

Run the installer with the /quiet or /passive switch: AccessDatabaseEngine_X64.exe /quiet 3. Fix Registry Conflicts using (OleDbDataReader reader = command