one more related question, will this help to copy only "bases.cav" file inside "repair" and "scanners" folder to have latest virus database? or maybe this is something else?
If you boot into safe mode, you should be able to copy your updated bases.cav file in the scanners folder and paste it into the same folder on your other machine. Just follow the procedure mentioned here: Where can i download the latest full AV database?
to install it on your other machine.
I say to make the copy of bases.cav while in safe mode just to ensure that CIS isn't trying to access the file when you try to copy it.