avast disappear and doesn't re-install/uninstall/repair

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3

It happened this morning: Avast Antivirus Free just disappeared from tray icon ?!

I checked the installation directories, and everything is in there, but the antivirus didn't started.

I tried to repair/uninstall, through Control Panel, but it show me an error message.

I tried to use Avast Clear, from here http://files.avast.com/iavs9x/avastclear.exe, but it stuck in the first screen.

I tried to use it again, in Safe Mode, but it stuck again.

So, in safe mode, I removed "all" avast entryies in register, restarted the computer and installed Avira. (But I prefer Avast)

I am using: Windows 8.1 Pro 64bit.

The last Windows Update is: Windows Defender KB2267602, but it shows an error, and I'm think this messed up with Avast.

Does anyone know what could be happened ?

Correa da Silva

Posted 2017-02-21T14:35:40.327

Reputation: 11

Question was closed 2017-03-11T00:20:11.680

Do you have System Restore enabled? – gronostaj – 2017-02-21T14:39:00.710

no. I want to know what happened to prevent it. – Correa da Silva – 2017-02-21T14:40:53.243

1"but it show me an error message." - This does not tell us very much. Please provide the exact error message. – Ramhound – 2017-02-21T14:52:59.517

Answers

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after a search on google, you are one of many people with this issue.

The answer to the question "Why it happened?" is not simple.

From Microsoft's blog:

  1. Your computer is already infected with rogue security software
  2. You have more than one antivirus program
  3. You might have a virus

This issue can occurs with Avast, Avira, AVG, Kasperky, Defender, and others.

Humberto Tecnoboy

Posted 2017-02-21T14:35:40.327

Reputation: 1

Can you provide any methods that will help determine the real cause, or that can be used to repair the system? – user686699 – 2017-03-04T05:43:42.217

Asked: 2017-02-21T14:35:40.327

Viewed: 602 times

Active: 2017-02-22T15:51:21.567