Why did this window pop up in High Sierra?

fisherking

macrumors 604
Jul 16, 2010
7,248
2,151
ny somewhere
you have more than one mac; they both have the same name, and the os (not just HS) will rename one to keep their identities seperate, as they're on the same network. standard behavior..
 

fisherking

macrumors 604
Jul 16, 2010
7,248
2,151
ny somewhere
did you previously have another imac? also, the network may just have seen your imac with a different IP address, and it's confused (seriously). it's nothing to worry about...
 

blackxacto

macrumors 6502a
Original poster
Jun 15, 2009
747
59
Middle TN
did you previously have another imac? also, the network may just have seen your imac with a different IP address, and it's confused (seriously). it's nothing to worry about...
I had another iMac two years ago. But what prompted this pop up?
 

blackxacto

macrumors 6502a
Original poster
Jun 15, 2009
747
59
Middle TN
Given what you've stated, maybe multiple network interfaces (Ethernet, Wi-Fi, etc.) are activated?
There's an article on troubleshooting here:
https://www.macissues.com/2015/05/18/fix-your-macs-network-name-getting-2-appended-to-it/
If you don't have any other Mac's on your network, you can skip #1 on the list.
Thank you for the link. I tried to run the bonjour shut off command in terminal, but High Sierra does not recognize a command listed for Bonjour on/off. Does anyone have a link to a recent explanation on how to effectively rechange the Mac network name?
 

iapplelove

Suspended
Nov 22, 2011
4,932
6,830
East Coast USA
This issue was pretty popular years ago. My Mac got all the way up to MBP(3). Only had one mbp my entire life , th same one I’ve been using since 2012.

Not sure what causes it, but haven’t heard of anyone having this issue of renaming in a very long time.
 

blackxacto

macrumors 6502a
Original poster
Jun 15, 2009
747
59
Middle TN
I have done a complete clean install of my 17,1 iMac. NO MIGRATION. I did drag my user documents folder back, but not a lot else. A lot of issues have gone away.
 
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