Hello, I regularly encounter the same problem that i can not access or see a XP machine from my W7 machine I could see before in my network. The strange thing is that remote desktop still works. The other way around stll works: I can see the W7 macine on my xp machine. The only solution I can use to fix the problem is to do a system-repair. At first this issue appeared after updating ms defender definitions. But yesterday it appeared just after a new startup without any update or change of settings on anything. I'm completely dazzled about the cause of this problem. I would like to know the real issue so i can use a proper fix instead of doing a system-repair every now and then. any suggestions?