When logged in to ArcGIS Server Manager, all services display a Status of "Stopping..." and cannot be started manually.
If there is a change in permissions for the Windows account running ArcGIS Server to its own installation files, this problem may occur. In addition, lock files that have become corrupted may cause this issue.
On the machine where ArcGIS Server is installed, re-apply the correct permissions for the Windows account running ArcGIS Server using the Configure ArcGIS Server Account utility, and restart the ArcGIS Server Windows service. If unsure of which account is running the ArcGIS Server Windows service, refer to the link below.
For more information on how to use the Configure ArcGIS Server Account utility, refer to the steps in Error: Service is currently being configured by another administrative operation.