On a system with Avast antivirus installed, when upgrading to Windows 10, version 1803, Windows automatically restarts and one of these two conditions might be experienced:
- The upgrade appears to complete, but after signing in, you observe a blank screen with only a Recycle Bin and a taskbar. The mouse cursor is present, but the Start menu may not function. Pressing Ctrl+Alt+Del runs the Task Manager, but the Task Manager may not be helpful.
- During the upgrade, Windows restarts to a screen that prompts you to “Choose your keyboard layout”. From there, troubleshooting options can be selected, but none of them appear to resolve the issue. For example, if Windows Rollback is selected, the entire process repeats.