Hello,
After the AVAST Premier installation on a Windows 8.1, impossible to print or to add a printer: my printer spooler can not start. I uninstall AVAST Premier, and now it works fine ...
I was able to reproduce the same behavior on another desktop PC (Windows 7 SP1) where we were not able to print, after installing the AVAST free edition ...
I've two HP Printers.
Thanks for your help.