How to uninstall

I would like to uninstall avast antivirus but keep getting the following error message: A setiface errror has occured:2 please contact support.
Any help would be greatly appreciated.

Can you go to Control Panel > Add/Remove programs > avast! antivirus > Remove
On the pop-up window, choose Repair (you must be connected to the Internet).
After finishing, boot, try to uninstall now.

Do you have any other antivirus installed in your computer?

I had this error as well. Even add/remove had this error. I tried the aswClear.exe tool and that didn’t work completely. Even running the latest installer from the avast website had the same error! >:(

I think that it may have something to do with fonts. I’m not sure though.

@ Sarah1, Try do a System Restore to before the problem occured. That may help.