Jan 13, 2014 04:48 AM|Angie xu - MSFT|LINK
DirectorySearcher IIS Application Pool goes in hang
Thanks for your feedback.
For this issue, I’d like to suggest you to enable the failed Request Tracing in IIS, this will give me some hint on why this happens, we can enable this Failed Request Tracing in the IIS by steps below,
And you can check log files in C:\inetpub\logs\FailedReqLogFiles, it will give more details to troubleshoot this issue.