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.