I have the free avast version.
Today, I downloaded updates (do it manually) and updated my version of avast for the newest one then tried to run the scan again. The clock starts counting and after 5 seconds it says scan complete and no virus found, but no files, folder or data have been scanned. The yellow bar hasn’t moved and all the bits underneath say 0 so it isn’t scanning. I’ve run it repeatedly in quick and full mode but get the same result - no scan.
It also says on the summary page an ! and yellow by virus definitions, even though I’ve just updated this (and have clicked on fix to fix it and it still shows up yellow).
I haven’t changed the settings etc apart from to switch updates to manual, but have had that as long as I’ve been running avast and have never had any problems until now. Everything was fine until I ran updates!
I have WindowsXP and no other antivirus apart from malwarebytes.
Please keep replies as non technical as possible please! I’ve googled this but haven’t understood any of it!