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After installing Sharepoint 2010 I am getting an error in Central Administration:
"HTTP Error 503. The service is unavailable"
Everthing was working fine, but after some time the central admin shows this error. The IIS service is getting stopped automatically.
Just in case the linked web site with the solution might not be accessable in future, here a short summery of what caused the error:
A domain group policy overrided an permission of the application pool accounts called “Log on as a batch job”. Without this permission the app pool cannot run properly.
