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I have an intermittent problem with an IIS site going offline a few times per month. The Event logs show the following errors:

Source :  WAS  
EventID:  5053  
Message:  The Windows Process Activation Service received a change
          notification, but was unable to process it correctly.  

Source :  WAS  
EventID: 5172  
Message: The Windows Process Activation Service encounter an error 
         trying to read the configuration data from file 
         \\?\UNC\domain\dfs\iis-config-folder\applicationHost.config

Followed by errors 

Source : IIS-APPHOSTSVC  
EventID: 9012 (invalid applicationHost.config),
         9006 (processing config errors), and often 
         9000 (SID mapping)

Does the need for SID resolution trigger these events? The site is configured to use anonymous authentication only so I'm not sure why SID mapping would ever be needed.

I have tried but cannot find good info on configuring WAS.

Running IIS 8.5 on Win2012R2.

bob
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  • Is this a single web server or a multiple server setup? Do you have shared configuration enabled? (https://technet.microsoft.com/en-us/library/cc771871(v=ws.10).aspx) – Steve365 Nov 17 '15 at 06:10
  • yes, good point. we do use a shared config and it _is_ at the location specified in the error (I edited the question to fix this). So, how could that cause the problem? – bob Nov 17 '15 at 12:48

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