If it is a trojan there is no repair option.
Trojans generally can't be repaired (either by the VRDB or avast virus cleaner), because the entire content of the file is malware, so it is either move to chest or delete, move to the chest being the best option (first do no harm). When a file is in the chest it can't do any harm and you can investigate the infected warning.
The VRDB only protects certain files, mainly .exe files, it doesn't protect data files or all files, it is not a back-up program, so there are going to be many occasions where repair won't be an option.
Only true virus infection can be repaired, e.g. when a virus infects a file it adds a small part to it, provided that file is one that avast's VRDB would monitor and you have run the VRDB, then it may be possible to repair the file to its uninfected state.
However, for the most part so called viruses, trojans (adware/spyware/malware, etc.) can't be repaired because the complete content of the file is malicious.
I can't find anything on google that would be vaguely helpful, there aren't many hits an one of them is this topic. So I think you need to get into the avast log viewer and see what file is being alerted on. Then a scan using virustotal and exclude if found to be a bad detection.
You could also check the offending/suspect file at:
- Upload to
VirusTotal - Multi engine on-line virus scanner and report the findings of these files here.
You can't do this with the file in the chest, you will need to move it out (export).Create a folder called Suspect in the C:\ drive, e.g. C:\Suspect. Now exclude that folder in the Standard Shield, Customize, Advanced, Add, type (or copy and paste) C:\Suspect\* That will stop the standard shield scanning any file you put in that folder. You should now be able to export any file in the chest to this folder and upload it to VirusTotal without avast alerting.
If it is indeed a false positive, add it to the exclusions lists and send a sample to avast:
Standard Shield, Customize, Advanced, Add and
Program 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 Standard Shield and Program Settings, exclusions.
Send the sample to
virus@avast.com zipped and password protected with the password in email body, a link to this topic might help and possible false positive in the subject.
