Unexpected 401.1 error over Windows Integrated Authentication on IIS 7.5 website

I recently added a post to our Support team blog which talks about unexpected 401.1 that you might see when you browse to an IIS 7.5 website over Windows Integrated Authentication. If you are seeing the following in the Error summary on your web page go check this link out.


Module WindowsAuthenticationModule
Notification AuthenticateRequest
Handler StaticFile
Error Code 0x80090305


Cheers to life!

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