I have a small MS network set up with 3 WinXP SP3 systems connecting to a Win7 system. I set this up back in September and things have been working fine until yesterday afternoon. One of the XP systems lost sight of the shared folders on the Win7 system for some unknown reason. The computer was sitting there on and had been able to see the folders, when suddenly it could not. No new software was added. No existing software was updated. Now the only way I can access the shared folders is by mapping a network drive using the IP number of the Win7 system. No passwords are required to access the Win7 system. No special permissions have been set up for anyone. It was just a simple file sharing network. I realize it is working and I can just hard code that IP number into the Win7 system and all is well. But what would have caused this and how can I get it back to just browsing for the folders like my users know how to do? Thanks in advance for any answers/suggestions you can give.