Exchange 2010/2013: The WinRM Shell client cannot process the request. The shell handle passed to the WSMan Shell function is not valid

Exchange 2013 – OWA/ECP defaults to Exchange 2010

Here is a quick tip for Exchange Admins working in an Exchange 2010/2013 Coexistence Environment. When you launch the Exchange Admin Center, https://wwwmail.domain.com/ecp and you login, you will be presented with the Exchange 2010 ECP page and not your Exchange 2013...
Exchange 2010/2013: The WinRM Shell client cannot process the request. The shell handle passed to the WSMan Shell function is not valid

Exchange 2013 – ECP Login Error 400

In your Exchange 2013, you have setup everything and now you want to start administering your new environment, upon launching the Exchange Admin Center you enter your credentials and click login, you are then presented with the following error: As a start you reboot...
Exchange 2010/2013: The WinRM Shell client cannot process the request. The shell handle passed to the WSMan Shell function is not valid

Exchange 2013 – Mailbox Migration Error

In your Exchange 2010/2013 environment, you might start moving mailboxes, however when you try creating a batch and then click the new button, you come across the following error message: The reason you receiving the error message above is because your arbitration...