Heads up, Office has updated and applocker is preventing Word etc from running. The Office .exe's are no longer signed with a fully trusted MS Code signing cert. They are now signed with 'MSIT TEST CodeSign CA6', with the Root CA being 'Microsoft Testing Root Certificate Authority 2010', this is not in the Trusted Roots. The Winword.exe date stamp also has today's date.
This has to be a mistake by MS by not codesigning correctly!!!!
There is no way I'm going to approve a TEST Cert and allow Office to work. I've prevented further updates being deployed.