We have an application that is sitting on a 3 tier physical enviroment. Just recently within the past month we would all of a suddenly receive the following error message.
Webpage error details
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 1.1.4322; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; InfoPath.3; .NET4.0C; .NET4.0E)
Timestamp: Thu, 19 Jan 2012 13:45:57 UTC
Message: Sys.WebForms.PageRequestManagerServerErrorException: The HTTP request is unauthorized with client authentication scheme 'Anonymous'. The authentication header received from the server was ''.
Line: 5
Char: 62099
Code: 0
URI: https://xxx. ...
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