When loading the Exchange Management Console for Exchange 2010 you might get the error :-
The following error occurred while attempting to connect to the specified exchange server ‘servername.local’:
The attempt to connect to http://servername.local/Powershell using “Kerberos” authentication failed: Connecting to remote server failed with the following error message: The WSMan client cannot process the request. Proxy is not supported for HTTP Transport. Change the transport to HTTPS and specify valid proxy information and try again
In order to resolve this I opened a command prompt in admin mode and ran the following command :
netsh winhttp reset proxy