503 error, caused by `iis_ssi.dll failed to load` in the Event Viewer (eventlog)

Question

I'm getting this error in the event log (EventViewer):

The Module DLL C:\Windows\System32\inetsrv\iis_ssi.dll failed to load. The data is the error.

OS is Windows2012 Server. How to fix it?

Answer 1

You need to add SSI in Server Manger. Follow these steps:

1. Add Roles and Features
2. In Server Roles, expand Web Server (IIS)
3. Expand Application Development
4. Select Server Side Includes