I noticed after the windows 0 April 2018 update which is really a service pack update from Microsoft. My Avast UI failed to load prompted appeared for the for first time.
Here is the fix:
- Download Avast clear which is the uninstaller for Avast - make sure you follow the uninstaller directions at Avast website
- Before you re-install Avast go to start button in search bar type services.msc
- In start menu right-click on services icon select run as administrator
- Start background intelligent services
- Start Remote Desktop Services also turn on or start the rest of Remote services it should be four of them listed right in a row
- Go to start button open run command type msconfig enter
- Go to services tab got to bottom and select enable all button then select ok
- Re-start computer
- Clear all Temp files - follow these instructions to do so
- Go to start button open run command type %temp% enter
- Delete everything
- Re-install Avast