A better question is what is your current screen resolution that isn't letting the App Manager run? You can also try these steps to uninstall it, clear out the old files and then reinstall it.

Quote A better question is what is your current screen resolution that isn't letting the App Manager run? You can also try these steps to uninstall it, clear out the old files and then reinstall it.

My screen res is 150%, due to the fact I'm partially sighted. I tried the recomendations of uninstall/installing it, but it still had the dialogue box telling mer it wouldn;t work, so I reduced it to 100%, and it worked. Strangely, however, when I put my resolution back up to 150%, it's still working.

I'm glad you got it working. The 150% setting is actually the text scaling size, not the screen resolution, but the important thing is that you found that changing that to 100% got the App Manager to work and then it stayed working when you set it back to 150%. That may help other people in the same situation, so thanks for sharing this!

Also, I'd recommend creating a Windows system restore point that you'll be able to go back to if the problem shows up again for any reason. The brief article shows the steps.