I have previously carried out an Avast full virus scan without issue, but lately it shows scan is incomplete and unable to scan all files.
It tells me to repeat the scan and I get the same message every time.
Is anyone able to explain why and what I can do to rectify this please?
Your comment “but lately it shows scan is incomplete and unable to scan all files” sounds more like an installation issue than individual files.
A screenshot of the error message might help ?
If this were a singe file or file type commonly this is for archive files and they can’t be unpacked
Commonly this is for archive files and they can’t be unpacked, The fact that a file/s can’t be scanned doesn’t mean they are malicious
This sounds more like something is broken with your installation an Avast Repair might resolve it.
AvastUI > Menu > Settings > General > Troubleshooting > APP Repair - Restart after completion.
The problem is that it isn’t “Some files cannot be scanned by Avast Antivirus”, but “I followed your instructions and after another full virus scan it still shows as incomplete - unable to scan all files.”
Which would appear to be a program issue rather than single or a few files not being able to be scanned. That is why I suggested an Avast Repair as a first step.
@ FITZ
As suggested attach a screenshot it may give more information (but I have my doubts).
If you did a reboot after the repair, we may be looking at a clean reinstall of Avast.
Also have you recently installed any other security related software ?