Numbers in parenthesis next to computer names

There is a number in parentheses beside my computer name that keeps incrementing up (now "(9)"), and the local name increments as well (now ".2"). I can change it back by deleting those numbers but they recur. I am running Yosemite (10.10.1) on a MacBook Pro, and have both wifi and ethernet running. Is it because both of those connections put my computer online so that they can't share the same name? If so, which one is being shown when a name comes up? It is a nuisance.

MacBook Pro (Retina, Mid 2012), OS X Yosemite (10.10.1)

Posted on Nov 28, 2014 4:25 PM

Reply
7 replies

Nov 28, 2014 4:26 PM in response to DFTeitel

Some people have seen this issue after upgrading to Yosemite. There are many threads here on it. I don't know if it's better with 10.10.1 than it was with 10.10 or not.


In the meantime, there's nothing that you can do that will sure-fire make this go away. People will suggest making some changes, rebooting routers, etc., but it's not a sure fix; the problem will probably come back if you're seeing it at all. Best you can do seems to be just deal with it, for now.

Dec 10, 2014 1:20 PM in response to DFTeitel

I had the exact same issue after updating to Yosemite, a continuously incrementing number in parentheses added to the hostname.. I first noticed it when troubleshooting time machine connection problems. I use a time capsule for my wireless router and also use iTunes library sharing..


I am not sure what the root cause of this problem is and I never saw it in earlier Mac OS releases.. However in my case, after updating to 10.10.1, I went into sharing preferences and reset the hostname (removed the number and parenthesis) and I have not seen it change since. I check it every now and then and is has not changed in several weeks.. (hope I did not jinx myself).


If you dig around for this problem on the discussions you'll see this problem has been around for years...


Thank you for your courage

Dec 10, 2014 4:29 PM in response to elbenoit

I did the same thing (that is, went into sharing preferences and reset the hostname), but it didn't work (that is, the numbers recurred) until I turned off "wake for network access" in Energy Saver and reset my primary router (Airport Extreme AC) at my house (I have a couple of airport express routers extending the network). I found that solution in some other forum and it seems to be working for me. May have been luck but it seems to be holding.

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Numbers in parenthesis next to computer names

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.