Windows 10, 8.1 and 7 getting bricked after April 2019 Windows Update roll-out. Devices apparently have either Avira, Avast, AVG Antivirus, and ArcaBit antivirus installed. Microsoft has temporarily blocked devices from receiving this update if Avira antivirus software is installed. Windows 10 May 2019 Upgrade, also known as 1903, is designed to have a reformed Windows Update behavior. Windows will try to uninstall the updates if it detects that the computer continues to fail when booting.”]
Source: https://hackercombat.com/windows-10-8-1-and-7-getting-bricked-after-april-2019-windows-update/