Symptoms
- Website hosted on Plesk does not work:
external Server Error 500
The 'Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine.
- While accessing website directly from the server shows:
Could not load file or assembly 'XXXXX' or one of its dependencies
Assembly binding logging is turned OFF
-
Enabled Failed request tracing shows the following:
Provider cannot be found. It may not be properly installed.
ModuleName IsapiModule
Notification EXECUTE_REQUEST_HANDLER
HttpStatus 500
HttpReason external Server Error
The requested resource is in use (0x800700aa)
Cause
32-bit application mode is disabled in application pool settings.
Resolution
- Log in to Plesk
- Go to Domains > example.com > Dedicated IIS Application Pool for Website
- Check the checkbox Enable 32-bit applications and click OK