My LAN consists of a gateway/router and 4 PCs A, B, C and D.
A thru C are Win7/64; D is XP32/SP3.
Until a few days ago, everyone saw and could access everyone. Then C stopped seeing D. C can ping D, but it cant see it (in Network or in the network map).
C can still see itself and also A and B.
A, B and D can still see everyone.
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