Microsoft is working on an official fix that will be available in September. Microsoft did this to enable more efficient concurrent camera access–that is, access to the camera by multiple applications at once. Unfortunately, the change broke many existing webcams and applications. Mike M, an engineer on the Windows Camera team at Microsoft, explained Microsoft’s reasons for removing this feature in a thread on the Microsoft forums. If you installed the Anniversary Update when it was first released, there’s a good chance you can’t downgrade any more.
Unfortunately, with the Anniversary Update, Microsoft quietly changed the downgrade period from 30 days down to 10 days. If you have this problem, you can downgrade from the Anniversary Update to the previous version of Windows.
