WAS与w3svc

After IIS 7.0 or IIS 7.5 starts, Windows Process Activation Service (WAS) calls the LookupAccountName function to resolve account names on the local system. If no name is succesfully resolved, the LookupAccountName function tries to resolve account names by using domain controllers (DCs) trusted by the local system. Depending on the configuration of the DCs, the LookupAccountName query may take more than 30 seconds to be completed. In this situation, it takes a long time to start WAS. Additionally, W3SVC does not start because W3SVC depends on WAS.

http://support.microsoft.com/kb/975443

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