My 2 PCs got same MAC addresses, how to fix?

Question

I have several PCs in my small shop, are connected as a LAN. I really don’t what this happened but today I noticed that one of PC’s softwares (teamspeak) cannot connect to other PC which runs a team speak server. I also got similar issue with some softwares between these 2 PCs. I thought maybe need to reinstall those softwares but nothing changed. I just accidentally noticed that those both PCs have same IP in my LAN & both are 192.168.0.3. I also noticed they both have same physical MAC address.

I’m not sure about MAC address but I’m sure each one of my PCs had a different local IP before this problem. I tried to reset router that PCs are connected via that, resetting firewall on problematic 2 PCs and etc, but nothing changed.

Please help I really can’t afford to buy a new MB for one of those PCs to fix this issue (and I’m not even sure this will help).

Any help is appreciated.

Both motherboard network interfaces have the same ethernet hardware address from the manufacturer?! You should definitely name and shame the manufacturer/model! — David Schwartz, Mar 19 '19 at 21:36
Alexander how can I exactly change the MAC address can u be more specific? — FlashPoint, Mar 20 '19 at 09:55
David I’m not sure what it ethernet harsware address is, but it’s a acer q67h2-am motherboard. — FlashPoint, Mar 20 '19 at 09:56

score 1 · Accepted Answer · answered Mar 20 '19 at 12:29

1

Nevermind I changed MAC address via device manager & now everything works fine.

answered Mar 20 '19 at 12:29

FlashPoint

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My 2 PCs got same MAC addresses, how to fix?

1 Answers1