I just upgraded to 8.1 and now none of the Metro apps start.
The issue is that if I start any metro app, including the Store and PC Settings they immediately fail. The classic desktop is fine, as are standard programs, it's just the metro apps.
If I look in the system event log I see errors like this:
Activation of application winstore_cw5n1h2txyewy!Windows.Store failed with error: This application does not support the contract specified or is not installed. See the Microsoft-Windows-TWinUI/Operational log for additional information.
In addition the tiles in metro have a small cross icon on them:
I suspect that my Live ID (which I somehow managed to skip during update) is not set properly and consequently none of the online stuff works. But how do I fix this? I can't start PC settings, I can't start store. I see no way in the classic desktop of setting these things. I don't want to have to reinstall for this. Is there a simple fix?
Edit 2: I created a Windows 8.1 Pro DVD (a trial to do all by itself) and the Refresh option didn't fix the issue either. Eventually I just bit the bullet and did a reset.