Ditto you have enabled the blocking on one of the systems... now figure out which one, quick dirty way start unplugging them one at a time until you find the culprit.
Okay, it is this way:
I am on the Vista machine with ONE XP machine hooked up to the LAN with the Vista machine as the only other machine on the LAN.
2 machines only. All the rest unplugged.
From the Vista machine I can look at the XP Pro machine. I have the desktop and C:\ and a couple other places set to share on the XP Pro machine. I can click on any of them and open them FROM the Vista machine.
Then I put my hands on the XP Pro keyboard and can see I have the C:\ drive on the Vista machine set to share and a couple other places and a subdirectory called PUBLIC, which is a Public folder on the Vista machine.
I click any thing but the Public directory and it gives me that error.
I look at the properties on the Public directory and set the other (like the C:\) to the SAME settings as the Public directory... NOPE, STILL that error.
Plug in the XP Home machine. Both the XP machines can talk to each other, go to all the shared drives on each other, etc. NO PROBLEMS. Try to go to ANYTHING on the Vista machine except the Public directory and GET THE ERROR.
Unplug the XP PRO machine and just leave the XP Home machine and Vista machine plugged in. NOPE. Try to go anywhere but the Public folder on the Vista Machine and ERROR.
I would REALLY like some screen shots on how to make C:\ shared in Vista. Pictures ARE worth a thousand words sometimes.
I don't know how to make things public in Vista I guess. Really frustrating.
Anyway, thanks for the ideas. I've been using LANs for so many years and now Vista comes along and it's like I've only owned a computer for a couple days or something.
Cheers.