The Windows Process Activation Service encountered an error trying to read configuration data from file'\\?\Windows\system32\inetsrv\config\applicationHost.config, line number
If you encounter an IIS Problem with Lync or Exchange, possible with starting certain service, check the SYSTEM EVENTS. You might find: The Windows Process Activation Service encountered an error trying to read configuration data from file '\\?\Windows\system32\inetsrv\config\applicationHost.config' , line number If so, simple navigate to C:\inetpub\history than the latest subfolder and copy the applicationHost.config and copy it to C:\Windows\system32\inetsrv\config\ than restart the World Wide Web Publishing Server and the related others, or reboot the server. It will mostly solve all this issues. Author: Thomas Pött Managing Consultant Microsoft UC