Q:
How can i remove or restore the “Scan with Comodo Antivirus” context-menu ?
A:
If your system is missing the “Scan with Comodo Antivirus” context-menu you can restore it this way:
Open a command-box (as administrator) and type the following;
regsvr32 “%ProgramFiles%\COMODO\COMODO Internet Security\cavshell.dll”
If you would like to unregister this and remove it from the right click context-menu type the following;
regsvr32 /u “%ProgramFiles%\COMODO\COMODO Internet Security\cavshell.dll”
Edit: Copy/paste the required command for convenience.