- Plesk 12.5 for Windows
Unable to access Plesk with error:
HTTP Error 503. The service is unavailable
the following error appears:
The Module DLL C:\\inetpub\\vhosts\\example.com\\httpdocs\\mivavm-v5.23\\bin\\MivaVMIIS7.dll failed to load. The data is the error.
Module is corrupted or incompatible with server OS.
Remove module mentioned in error message from IIS > Modules > Configure Native Modules .