Author Topic: Unable to click anything in Avast UI and on Windows after opening Avast  (Read 389 times)

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Offline matthijs.burroughs

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Hello there,

I have been having an issue where I can't click on anything within the UI and on Windows. So I open AVAST and then I try to launch or click on anything and nothing happens, I can't even close the UI or click on other Windows icons or programs. The same thing happens when an AVAST pop-up window appears and then I try to click on it. The only thing that lets me take back control of Windows is by prompting the Windows task manager and then by ending the UI. However I am unable to do this for the pop-up window, I regain control of windows but the pop-up doesn't go away. I have to log out of the session for it do go away. I had this exact problem with AVG, I though it was a bug and so I uninstalled it and installed AVAST, which worked fine for a day. I am running on Windows 7. I noticed some people had the same problem but I couldn't find if they had resolved the issue. Does anyone have any clue what is causing this issue? Thank you for your help n____n

Offline Asyn

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Re: Unable to click anything in Avast UI and on Windows after opening Avast
« Reply #1 on: November 11, 2020, 11:35:42 AM »
- Which Avast..? (Free/Premium)
- Which version/build of Avast..?
- OS..? (32/64 Bit..? - which SP/Build..?)
- Other security related software installed..?
- Which AV(s) did you use before Avast..?
Win 8.1 [x64] - Avast PremSec 21.2.2451.Beta#2 [UI.599] - EEK - Firefox ESR 78.8 [NS/uBO/PB] - TB 78.8
Avast-Tools: Secure Browser 88.2 - Cleanup P 21.1 - SecureLine 5.9 - Driver Updater 21.1 - CCleaner 5.77
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0

Offline matthijs.burroughs

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Re: Unable to click anything in Avast UI and on Windows after opening Avast
« Reply #2 on: November 11, 2020, 12:00:14 PM »
Haha sorry about the lack of info, I should of expected this^^.

- Which Avast..? (Free/Premium): Free
- Which version/build of Avast..? : 20.8.2432 (version 20.8.5684.604)
- OS..? (32/64 Bit..? - which SP/Build..?) Windows 7 64 Bit Service pack 1
- Other security related software installed..? Malwarebytes (Just installed if for this issue)
- Which AV(s) did you use before Avast..? AVG

Thank you for your quick reply! I actually just installed Malwarebytes and it found PUP.Optional.InstallCore and I guess after it put it quarantine, the problem stopped. I don't know if it was related as I couldn't find any problems that were similar related to this PUP.Optional.InstallCore.

Any thoughts on this?

Offline matthijs.burroughs

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Re: Unable to click anything in Avast UI and on Windows after opening Avast
« Reply #3 on: November 11, 2020, 01:49:57 PM »
- Which Avast..? (Free/Premium)
- Which version/build of Avast..?
- OS..? (32/64 Bit..? - which SP/Build..?)
- Other security related software installed..?
- Which AV(s) did you use before Avast..?

- Which Avast..? (Free/Premium): Free
- Which version/build of Avast..? : 20.8.2432 (version 20.8.5684.604)
- OS..? (32/64 Bit..? - which SP/Build..?) Windows 7 64 Bit Service pack 1
- Other security related software installed..? Malwarebytes (Just installed if for this issue)
- Which AV(s) did you use before Avast..? AVG

Omg I restarted the PC after I had quarantined the file with Malwarebytes and after being able to re-access AVAST, however the same issue is back.

Offline Asyn

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Re: Unable to click anything in Avast UI and on Windows after opening Avast
« Reply #4 on: November 11, 2020, 02:00:43 PM »
First, be sure to get rid of all remnants of any prior installed AV(s)..!!
-> https://support.avast.com/article/11/

Then:
1. Download Avast Free Antivirus: https://files.avast.com/iavs9x/avast_free_antivirus_setup_offline.exe
2. Follow instructions: https://www.avast.com/uninstall-utility (Run this tool for all prior installed Avast versions..!!)
3. Reinstall Avast with the downloaded installer from point 1.
4. Reboot.

PS: Regarding Avast & Malwarebytes, see: https://forums.malwarebytes.com/topic/200324-exclusions-for-avast-users/
Win 8.1 [x64] - Avast PremSec 21.2.2451.Beta#2 [UI.599] - EEK - Firefox ESR 78.8 [NS/uBO/PB] - TB 78.8
Avast-Tools: Secure Browser 88.2 - Cleanup P 21.1 - SecureLine 5.9 - Driver Updater 21.1 - CCleaner 5.77
Avast Wissenswertes (Downloads, Anleitungen & Infos): https://forum.avast.com/index.php?topic=60523.0