Loading of ISAPI Filter requires recycle of app pool and restarting of the site. RRS feed

  • Question

  • User-2053198433 posted


           I have written a isapi filter for url redirection in IIS 7.5.  The filter is not loaded on the next request.  But if I recycle the app pool and restart the site, the filter is getting loaded and doing its job.

       So my question is does restarting of the site and recycling of the app pool is required to load the filter.  If so, then please let me know the reason.


    Neelesh Jain.

    Wednesday, March 9, 2011 7:36 PM


  • User690216013 posted
    The reason is simple. Only when a new worker process for that application pool is created, IIS settings are read and your filter is loaded. Otherwise, IIS has no idea that you have a new filter there.
    • Marked as answer by Anonymous Tuesday, September 28, 2021 12:00 AM
    Saturday, March 12, 2011 4:06 AM