I am getting log warnings as below when trying to install one package on fresh Sitecore 9.0.2 instance. I don't understand why its getting restarted again.

Is there any app pool setting which causes such behavior?

WARN Shutdown message: Change Notification for critical directories.
bin dir change or directory rename
Hosting Environment initiated shutdown

  • What is in the package? Oct 3, 2019 at 10:16
  • If your package contains dlls for the bin folder, this is a normal behaviour Oct 3, 2019 at 10:23
  • its ucommerce package, which adds few dll's.
    – ganesh
    Oct 3, 2019 at 10:26
  • but its causes app restart, new log file is created and then after there is no msg or error related to package in new log file
    – ganesh
    Oct 3, 2019 at 10:28
  • Is there any specific app pool setting which causes it to recycle frequently , because in sitecore upgrade process also we are performing same operation, but at that time i never see such errors.
    – ganesh
    Oct 3, 2019 at 10:29

2 Answers 2


In your comment, you say:

its ucommerce package, which adds few dll's.

The package is updating DLLs which are being placed in the bin directory. When you update DLLs, Sitecore needs to restart in order to load those DLLs. This is normal behavior. The log message you see is Sitecore telling you that it is restarting due to a change in DLLs in the bin directory.


That’s normal. Sitecore would restart with a warning message if you are changing(adding/editing) any files in bin directory. Your package contains dlls which are being added to bin

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