UI failed to start

[REDACTED]

Hi folks,

It seems from reading other threads here that I'm not the only one this has happened to. After a new install of Win10, Avast Pro (build 17.8.3705.249) keeps crashing with the "UI failed to load/This is really embarrassing/AV Service is not responding" message. Clicking on Restart Service the first time is uniformly ineffective, and the second time usually works, but the program will crash again within a few minutes.

I have tried repairing the installation, a clean reinstall of Avast, and setting Remote Desktop Services to Automatic as per the advice given to others. None of these have been effective in solving the problem. I previously had Avast Pro running on the same PC under the same Win10 (HDD died, had to reinstall everything) with no problems. Is there anything else I can try?

I've also raised a ticket with Support, but have had no reply.

[Asyn]

Follow instructions: https://support.avast.com/article/33/

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I used the tool and it said there was a conflict with another antivirus program. The only other antivirus I have running is Windows Defender, and there doesn't seem to be an option to turn it off.

[mchain]

See https://www.tenforums.com/tutorials/5918-turn-off-windows-defender-windows-10-a.html

Also:  http://uk.pcmag.com/microsoft-windows-defender-security-center/92378/news/microsoft-fixes-serious-flaw-in-windows-defender

Update at Microsoft Update and get the latest security fixes for Defender before attempting to install avast.  Defender is supposed to turn itself off when a third-party install is detected but it doesn't always do so.  You may need to turn it off manually instead.

Related:  https://www.groovypost.com/news/microsoft-fixes-serious-windows-defender-bug-update-now/