Error authorizing user - Value does not fall within the expected range.

Discussion created by pkhanal on Apr 20, 2011
Latest reply on Aug 16, 2012 by pkhanal
Hello All,

I am occassionaly getting Invalid Url response in the silverlight app that uses the ArcGIS REST API. When I check the rest log. I see the following error:

Log Entry : 4/20/2011 7:44:54 AM
  ERROR:Error authorizing user
  :Value does not fall within the expected range.

The error is unpredictable. Once I reload the app, everything works fine. I only get this error occassionaslly.

If i use the above url in the browser directly, I see a valid json response.

Any idea what is going on?

I am using ArcGIS server 9.3.1 with service pack 2 with Quality Improvement Patch.