App pool gets stuck on reset and takes .net pages out


Several times after our app pool has been told to reset, it gets stuck, the .net pages go down and the following error appears in the application event log:

Failed to execute request because the App-Domain could not be created. Error: 0x80070057 The parameter is incorrect.

Our app pool is scheduled to automatically reset at 4am, so the errors stay up until we manually restart the app pool.

Has anyone else encountered the error or know of any solutions?

Research has suggested it's a permissions issue, but the permissions don't change and the error happens infrequently. The site has no other permission based problems and the app pool identity has permission where needed.

asked on Server Fault Sep 17, 2009 by user8042

1 Answer


There's a couple different things this could be. Have you tried localizing the problem anymore? Try disabling the scheduled restart, and recycle the app pool every in different ways. Also, manually recycle (I'm assuming you're doing all of this in a test environment) the app pool to see what the behavior is afterwards.

Why is the app pool being recycled at 4am? Any of the files in the application directory changing?

answered on Server Fault Jun 20, 2010 by Tony

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