NET SEND suddenly not working to majority of PCs on corporate network
Posted on 2009-02-10
Has worked like a champ up until maybe a week ago. Suddenly only a few machines receive the message. Messages are being sent from a 2000 SP4 box to everyone in the organization (about 65 PCs, 11 Servers [all win2k3]). Best I can tell there are maybe 4 or 5 PCs that are still getting the messages - rest of us get nothing, no error on the originating machine. At least one server is getting the message as well. Have checked messenger service, all ok.
Here's the interesting part - if I specify a machine (ie. net send pc1 test) it works. Anything broadcast fails. Windows firewall on DCs is disabled - obviously nothing on the win2k machine. One of the machines that does receive the message is on the same switch. At least one of the other machines that it works fine on is at the opposite end of the building and the server that is receiving fine is half way through the building. Any suggestions on how to troubleshoot this? No errors on any receiving machine nor on the sending machine.