Unable to access the Symantec Management Platform (SMP) Console and the following error is received when trying to open the SMP Console:
HTTP Error 503. The service is unavailable.
The following error is also seen when trying to open IIS manager:
ITMS 8.x
The applicationHost.config ( C:\Windows\System32\inetsrv\config\ ) is corrupted and shows file size 0 KB.
Note: Sometimes, the IIS service doesn't start if the applicationHost.config files gets corrupted and it gives the above error while accessing smp websites and application pool.