Exception

A potentially dangerous Request Form value was detected from the client

I was working on an upgrade on an application and after the upgrade, I tried logging in to test the application only to be greeted with the following errors: Error1: A potentially dangerous Request.Form value was detected from the client (wresult=” Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.Form value was detected from the client (wresult=” Error2: Exception message: The request does not contain a claim with the name: http://schemas.sysads.co.uk/ws/2013/01/identity/claims/cc_locale Interestingly other users where able to log into the same application without any error :(, so the above errors didn’t make any sense to me :?