Avast Premium Security disappeared, Avastclear does not help

[tom.fiala90]

My Avast Premium Security recently disappeared from my computer. I still see it in Settings -- Apps and Features but I cannot start the program or unistall and reinstall it. I am getting the following message: "C:\Program Files\Avast Software\Avast\setup\Instup.exe" not found.

I found a forum entry recommending removing the damaged Avast by Avastclear and reinstalling. I downloaded Avastclear and tried to run it (with Admin rights) -- it pretends to be starting for a few seconds but then nothing happens. I also tried to first independently start Windows in safe mode and then run Avastclear but also nothing happened. I could not find any hints online on how to proceed with Avastclear not working.

Please help me get my Avast Premium Security back up and running correctly.

[Asyn]

Download and run the offline installer: https://files.avast.com/iavs9x/avast_premium_security_setup_offline.exe

[tom.fiala90]

Download and run the offline installer: https://files.avast.com/iavs9x/avast_premium_security_setup_offline.exe

Did not work. I downloaded it and ran it. Similarly to Avastclear, it pretends to be loading for a few seconds and then nothing happens. Can something in my computer be blocking these in without notification?

[Asyn]

- OS..? (32/64 Bit..? - which SP/Build..?)
- Other security related software installed..?
- Which AV(s) did you use before Avast..?

[tom.fiala90]

- OS..? (32/64 Bit..? - which SP/Build..?)
- Other security related software installed..?
- Which AV(s) did you use before Avast..?

OS: Windows 10 Home, version 21H2, build 19044.1466, 64-Bit
No other security software installed. The computer (bought fall last year) came with McAfee pre-installed which I immediately uninstalled and replaced with Avast. All worked fine until mid February.

[Asyn]

Hi, in case you're interested in an experimental approach, you could try Icarus.
-> https://forum.avast.com/index.php?topic=264883.0

Else, it's probably best to contact support: https://support.avast.com/contact

[tom.fiala90]

Thanks anyway for all your help!

[Asyn]

You're welcome.