Before installing kaspersky antivirus i uninstalled the previously installed avast antivirus.
But after installing the new one,previously installed avast appeared again and not uninstalling.
Now, how to uninstall avast antivirus?
Hello,
I encountered the same problem when I tried to install Kaspersky on my computer. If you use the standard method of going to your Control Panel > Programs > Uninstall a Program but found out that your previously installed Avast is still there after installing Kaspersky, You might want to try the uninstallation utility aswClear from Avast to fully uninstall the software. Here’s how:
1. Click on this link to download aswClear on your desktop
http://files.avast.com/files/eng/aswclear.exe
2. After downloading, Start Windows in SAFE MODE
3. Open/Run the uninstall utility.
4. If you installed your previous Avast software in a different folder other than default, Browse for it—but don’t forget to check other files in that folder as other contents in that folder might be deleted by mistake
5. Now click REMOVE
6. Don’t forget  to restart computer
Note: If you get an error message while installing the uninstall utility (something about the avast self protection is enabled), it means that you didn’t run the uninstall utility from safe mode.
You have to make sure that you run the utility in safe mode or else the self-defense mode will block the uninstall software.
Uninstalling avast is possible the same as any other software by utilizing the ADD/REMOVE PROGRAMS in the Control Panel.
Corrupted virus signatures have caused it not to update properly, or it wont start properly and it needs to be reinstalled. Maybe corrupted files are causing 100% CPU usage.
These and other issues can cause you to uninstall and reinstall your antivirus product. If some more problems appears, use the Click the START button the select SETTINGS > CONTROL PANEL (or simply CONTROL PANEL – It depends on your Windows version) > ADD/REMOVE PROGRAMS.From the list of installed applications select avast! Antivirus and click on CHANGE/REMOVE button.
Avast! setup starts. Select UNINSTALL and click on NEXT.
Computer restart will be needed after
avast! uninstallation. avast.com/eng/avast-uninstall-utility.html
