On a client's computer, the following error occurred when the user tried to uninstall AVAST Free Antivirus: ' The stub cannot run installer/updater executable 'C:\Program files\Avast Software\Avast\setup\Sfx\instup.ex' (code 0x3)'.Īt first I tried to uninstall AVAST using Avast's removal utility ( avastclear.exe) but the same error appeared again.
