Give it an hour or two and see if it moves any further. This is a very simple step, but it’s a good one to take first.
Windows has a built-in troubleshooter that will try to detect and automatically resolve any problems with Windows Update.
Before erasing all Firefox data or starting a troubleshooting process, check for any updates to the Firefox browser.
Manually check for updates to Firefox by clicking the "Firefox" menu option at the top of the Firefox window and selecting "About Firefox." Wait for any updates to download and click the "Restart to Update" button. Firefox's Safe Mode resets certain settings and disables all extensions and hardware acceleration.
From here you can View detailed information to find out more. Clearing the folder where all of the update files are stored will force Windows Update to download afresh, which can help resolve any problems. Input C:\Windows\Software Distribution\Download and click OK to launch to the folder.Test for faulty extensions by disabling them all and reenabling them one at a time until you find the problematic extension.If an extension is causing the problem, try updating them and restarting Firefox to fix the problem.Error messages for failed updates are rarely helpful, which means it can be hard to find a specific solution.
We’ve rounded up tips that should resolve the most common problems with Windows Update.If the problem continues in Safe Mode, it is most likely related to the AVG update or an Internet connection problem.