Installing application update never finishes

Hello, I discovered my Avast Premium Security had an incomplete application update running and it never finishes. I was installing Adobe Acrobat DC and it hung at the very end and their support asked if my antivirus had an incomplete update and that is how I discovered the problem with Avast. Interestingly my Windows update is trying to update and is hung as well.

The Adobe Acrobat actually installed successfully
I have manually stopped and disabled the Windows update service to try to eliminate one factor
I tried to repair the Avast App but it reports " setup is already running "

Need help please to see what next step would be to get Avast fixed

Need help please to see what next step would be to get Avast fixed
https://support.avast.com/en-ww/article/Repair-Antivirus/

Thank you, I tried following that guide before this forum post and mistakenly picked “modify”, per instructions now I selected “uninstall” but still receive the same response “setup is already running”

Restarting your system may well end the uninstall function, but it could also leave you with a partial/corrupt installation. This in itself is a problem and you may need to do a clean reinstall.

Clean Reinstall -

Follow the instructions in the link in 1.

[quote author=DavidR link=topic=256420.msg1594770#msg1594770 date=1616801009]
Restarting your system may well end the uninstall function, but it could also leave you with a partial/corrupt installation. This in itself is a problem and you may need to do a clean reinstall.

Thanks for the help. Interestingly I had rebooted and shutdown a few down without it helping the situation. I restarted again holding down shift key, selecting troubleshoot-advanced options-startup settings-restart. The laptop restarted and asked for my bitlocker key, which i was about to lookup and the laptop suddenly powered off. I thought I ran out of battery so I plugged it in, hit the power button, logged in and BAM, Avast flashed its update successful window and I verified the install completed.

Good news, saves a bit of hassle.
I wonder if bitlocker drive encryption (I have never used it) gets involved or slows/interrupts the uninstall function. Or just a battery condition as you mentioned.