Opening any app on Windows 8.1 Enterprise will give me the following error:

This app can't open

There's a problem with [App]. Contact your system administrator about repairing or reinstalling it.

In the Microsoft-Windows-TWinUI/Operational event log there's a corresponding log message:

Activation of the app [App] for the Windows.Launch contract was blocked with error 0x80073CFC because its package is in state: Error from application of unknown origin.

So what's an application of unknown origin and how can I overcome this problem? Am I missing some certificate here? All of those apps were installed using the Windows Store, so nothing special here ...

Update: Message in the system event log

Unable to start a DCOM Server: Microsoft.WindowsLive.Mail.wwa as Unavailable/Unavailable. The error: "15612" Happened while starting this command: "C:\Windows\system32\wwahost.exe" -ServerName:Microsoft.WindowsLive.Mail.wwa

  • Anything in the System Event logs? – DavidPostill Oct 8 '14 at 9:35
  • Doesn't tell me too much, however. Back in the old days, you got exceptions with at least some error detail. Nowadays, you just get HRESULTS and useless error codes :( – Gene Oct 8 '14 at 10:56
  • Settings (and other Apps) Will Not Start (Metro) with the same error suggests a System Restore will fix it. – DavidPostill Oct 8 '14 at 15:21
  • the error means ERROR_NEEDS_REMEDIATION: "The application cannot be started. Try reinstalling the application to fix the problem". remove the apps and reinstall them via Store. – magicandre1981 Oct 14 '14 at 4:06

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