Solved Network discovery - system can't find file specified

Hello to all on this forum

I ran into one of now-it's-working-now-it-doesn't problems. I have one desktop and two laptops at home and I wished to access my desktop PC from the laptop HP 530s. I set file sharing and everything and all worked just fine. After moving to another place I had a problem with connecting to a wireless router. Now, that problem is solved but on my laptop I can turn on network discovery any more.
When I try to turn it on there is a message "System can't file specified". I don't if there is some corrupted files or is something deleted and needs to be restored. Just to add that my friend connected that HP to the new router so I can't tell if he erased something and I can't reach him at the moment.
Can you tell me what "System can't file specified" really means, I searched for days but didn't find any useful answer. Thank you.

Maybe this thread can help
http://www.vistax64.com/vista-networking-sharing/56536-cannot-turn-network-discovery.html
http://www.vista4beginners.com/Enable-network-discovery-file-sharing

our excellent tutorial on the subject
http://www.vistax64.com/tutorials/125639-network-discovery-turn-off.html

I can't believe that! It never crossed my mind that there is an option in Windows Firewall to allow network discovery. Thank you very much, next time I will ask experts before I spend days searching around Thank you.

Glad to be of help. Come back often

I sure will, I hope I'll be able to help somebody else. Tnx again