I have several very important Microsoft Publisher 2003 files infected with a trojan JS:ScriptIP-inf [Trj]
I had backed them up two years ago on an external hard drive so I went to get copies off that drive but strangely they were infected too- meaning I had a trojan for two years but showing no obvious effect.
1) Can I disinfect the files? Avast's Fix Automatically cannot repair and sends straight to the 'chest'/quarantine
2) Can I open the files and copy the contents over to a new file, then delete the old ones?
3) Will opening the file activate the trojan?
Fwiw, my only annoyance with Avast is that, on occasions, an update brings with it a decision that a perfectly harmless file that's been installed forever and never given any problems is now suspicious. It happened recently with a Money program file - a .dll, IIRC. I elected to tell Avast it was a false positive, and have seen no negative consequences.
"....several very important Microsoft Publisher 2003 files infected with a trojan......"
It could well be a false positive so upload one of them here and it'll be scanned by at least fifty different anti-virus engines. The report will help you decide if it's safe to open or not. Do the same for your other Publisher files.
Please remember to return with some feedback this time.