w3wp.exe process is missing after TFS app tier reboot

by XDK 23. December 2013 11:12


w3wp.exe an Internet Information Services (IIS) worker process is a windows process which runs Web applications, and is responsible for handling requests sent to a Web Server for a specific application pool. W3wp.exe process will not be started automatically after App tier reboot or IIS restart or application pool restart. w3wp.exe will be launched once the first request is made to the TFS Application.


1. Try accessing TFS application once http://tfs:8080/tfs. See whether the w3wp.exe is available in "Windows Task Manager" --> "Processes Tab"

2. You can configure Worker process started automatically by adding startMode attribute to TFS application pool to AlwaysRunning in your applicationHost.config


   <add name="Default App Pool" startMode="AlwaysRunning" />


Solution 2 will work for IIS 7.5 or newer


Azure DevOps on-premises | TFS 2010 | TFS 2012 | TFS 2013

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About the author

My name is Xavier Dilip Kumar Jayaraj having 16+ years of IT experience which includes solid experience and depth Knowledge in Application Life Cycle Management, Configuration Management, Implementation and Support using TFS on-premises and Azure DevOps. I have invested in gaining DevOps knowledege to expertise with Cloud Computing providers namely Microsoft Azure and Amazon Web Services in recent years. I am very positive to learn and adapt emerging technologies to client’s environment.

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The information provided here is based on my expreriences, troubleshooting and online/offline findings. It can be used as is on your own risk without any warranties and I impose no rights.