“Windows 10 continues to have the highest customer satisfaction of any version of Windows. We have seen a small number of reports of unexpected behaviors following the Windows 10 Anniversary Update. Engineering and customer support are investigating these on a case by case basis and offering trouble-shooting tips as necessary. If a customer has any issues, we offer customer support at www.microsoft.com/support.”

 

Installation of the Anniversary Update does include the ability to "go back" or return to the previous version of Windows within 10 days of the update.  If you are unable to log into Windows 10 and choose to uninstall the Anniversary Update, here are two methods that can be used:

 

1. Restart your PC. When you get to the sign-in screen, hold the Shift key down while you select Power > Restart. 

2. After your PC restarts to the Choose an option screen, select Troubleshoot > Advanced Options > Go back to the previous build.  If you don’t see this option, try Method 2.

 

1. Restart your PC. When you get to the sign-in screen, hold the Shift key down while you select Power > Restart. 

2. After your PC restarts to the Choose an option screen, select Troubleshoot > Advanced options > Startup Settings > Restart.

3. After your PC restarts, you'll see a list of options. Select 4 or F4 to start your PC in Safe Mode. 

4. Open the Settings app.

5. Select Update & security and then the Recovery tab. 

6. Under “Go back to an earlier build”, click the Get started button and follow the instructions.