Microsoft Access Database Engine 2016 Redistributable 32 Bit Jun 2026

| Error | Likely cause | Fix | |-------|--------------|-----| | The 'Microsoft.ACE.OLEDB.16.0' provider is not registered on the local machine | 64-bit app calling 32-bit provider OR bitness mismatch with Office | Use 32-bit caller; uninstall 64-bit Office; install ACE 64-bit if caller is 64-bit | | Cannot start your application. The workgroup information file is missing or opened exclusively by another user. | System.mdw missing or permissions issue | Grant modify access to %APPDATA%\Microsoft\Access\System.mdw | | Unrecognized database format | File created with newer Access version (2019/365) | Use ACE.OLEDB.16.0 with Office 2016 format only; some 365 features break compatibility | | Could not find installable ISAM | Missing Excel or Text driver registry keys | Re-register ACEOLEDB.DLL and EXCELPLUGIN.DLL | | Out of memory (32-bit) | Query exceeds 2GB working set | Split large exports into batches; use TOP or LIMIT |