Running a Win 10 machine and 2 XP machines on a network. All was well yesterday, but for some reason today the two other PC do not shopw up on the network and I can't seem to get them back. As an example one of the missing PCs is called Xptransfer and the other BasementPC.

What is strange is that both show up in McAffe's network window in the AV program

Only thing I can think of is a new update broke something.

Any ideas anyone