So basically if you installed the app prior to 2/23 then you would hit this issue and removing and reinstalling the app won't fix the problem.' Removing an app and installing again doesn’t clear the cache, so even if you do this the app still fails to acquire a new license on startup. Unfortunately, this exposed another issue whereby the Store would fail to acquire a new license if one already existed – regardless of whether the license had expired. 'There was an issue with the Store Licensing Service which meant that the Preview Apps were given a license that timed out far too quickly. In a post on the official Microsoft support forums, we have learned that this issue stems from the Windows Store failing to acquire a new license for the apps. Fortunately, the issue has been pinpointed and it has to do with the Windows Store Licensing Service. Unfortunately, this method does not work with the Office Touch apps. The same issue occurs with various other apps and typically a solution would be to uninstall the app and then reinstall the app. You can read about the issue here - basically, the apps would not launch, showcasing an error that says 'This app can't open.' Two weeks ago, we brought to light an issue with Office Touch Preview, a suite of apps released by Microsoft to the Windows Store for Windows 10 Technical Preview users.