Anything that you consider a false positive, shouldn't just be ignored (avira speak) or excluded from scans (avast), that is shooting the messenger rather than treating the problem.
Confirm by examination (virustotal) that it is indeed an FP, if so send the sample for analysis and correction of the detection signature plus inclusion in a signature update, see #### below. This helps all avast users.
There is a drop down list in the Ask dialogue window that you can select the option, Move to chest, Delete, No Action (just means don't take any other action the file remains in location but avast won't let you run it), etc. These actions may differ from one Shield as those like the Web Shield which are intercepting detections outside of your system would just give an Abort connection, this just drops your connection for that item (not your internet connection) and flushes it out of its cache where the scan takes place.
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You could also check the offending/suspect file at:
VirusTotal - Multi engine on-line virus scanner and
report the findings here the URL in the Address bar of the VT results page. You can't do this with the file securely in the chest, you need to extract it to a temporary (not original) location first, see below.
Create a folder called
Suspect in the
C:\ drive. Now exclude that folder in the
File System Shield, Expert Settings, Exclusions, Add, type (or copy and paste)
C:\Suspect\* That will stop the File System Shield scanning any file you put in that folder.
If only GData and avast detect it - GData uses avast as one of its two scanners so counts as 1 detection and almost certainly an FP.
Send the sample to avast as a False Positive:
Open the chest and right click on the file and select 'Submit to virus lab...' complete the form and submit, the file will be uploaded during the next update.
- In the meantime (if you accept the risk), add the full path to the file to the exclusions lists:
File System Shield, Expert Settings, Exclusions, Add and avast Settings, Exclusions Restore it to its original location, periodically check it (scan it in the chest), there should still be a copy in the chest even though you restored it to the original location. When it is no longer detected then you can also remove it from the File System Shield and avast Settings, exclusions lists.