- Plesk Onyx for Windows
- Website example.com shows the following error:
PLESK_ERROR: HTTP Error 500.0 - Internal Server Error Calling LoadLibraryEx on ISAPI filter "C:\Program Files (x86)\Parallels\Plesk\isapi\hotlinkprot.dll" failed
C:\Program Files (x86)\Parallels\Plesk\isapi\hotlinkprot.dllfile does not exist on the server;
Plesk was recently upgraded from version 11.5.30.
There is an ISAPI filter under IIS > Sites > example.com > ISAPI Filters which points to a DLL file that no longer exists on the server.
- Connect to the server via RDP;
- Go to IIS > Sites > example.com > ISAPI Filters;
- Right-click on the filter which is pointing to the non-existent DLL file and remove it.