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SO I have a client whos DC went down. With it offline I went ahead and assigned static IP's to all workstations (win 8.1) so they would still have internet and recreated a file-share off of a single workstation. They are up and running with one problem. 2 of the workstations will not take a static IP. I'll configure them, bounce the system and ipconfig only to see a self-assigned ip. I've reset TCP/IP on the box as per this doc from MS. I've updated the drivers for the NIC. I'm stumped. This is working just fine for other workstation on the network. Although as a side note, all system have the networks classified as a public network.

brooksly
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    Did you by accident configure both machines to the same IP? That was the reason I had this problem last time, duplicate IPs. – Gerald Schneider Oct 20 '16 at 12:58
  • I want to say no because but I'm going to check again just to make sure. – brooksly Oct 20 '16 at 13:10
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    You know sometime when you are so confident in something you end up looking foolish. It was a dup from the phone system, thanks for the clear thought! – brooksly Oct 20 '16 at 13:31

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Make sure the IP address you assign isn't already in use.

Windows uses a self assigned IP address even though a static address is assigned when duplicate IP addresses are in use on the network.

You can check this by running ipconfig on the command line, the IPv4 address line will have (duplicate) after the static IP address if this is the case.

Gerald Schneider
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