My son who has a standalone PC recommended downloading Avast. I work for an impoverished school library which has a network of XP's and I thought, Great! I'll install Avast. I did & all seemed fine. Then the networked printers stopped working for the computers which were not directly attached to printers. The administrator, who far prefers Macs, is disturbed and I have no idea what to do, or what happened. Perhaps I should have been more careful to get rid of any other virus protection-- Norton, with expired subscription.
Any help would be appreciated. When I tried removing Avast and remnants of Norton from one machine, the printer still did not function.
Thanks in advance for any help,
Faithmw