imac does not get ip address from aiport express after yosemite upgrade

[maxymina]

Hi there,

i just got myself around updating my imac to yosemite and now my computer does not obtain an ip address from my airport express. it sees the airport express but does not get an ip. when i go to the assistant it asks me to turn off the airport express and restart it. then the computer can get the ip address and works again. however, if i put the desktop to sleep, upon waking it up the same problem appears: it cannot get the ip from the airport express.

I have 2 other computers (macbooks) running yosemite and an ipad, i also have an android phone and these devices have no problem with the aiport express. so the problem is something that got modified/didn't get modified in this particular desktop during the upgrade to yosemite.
I would appreciate any suggestions. Thank you very much in advance.

 

[vansmith]

when i go to the assistant it asks me to turn off the airport express and restart it. then the computer can get the ip address and works again. however, if i put the desktop to sleep, upon waking it up the same problem appears: it cannot get the ip from the airport express.

I see that you've tried one thing (putting it to sleep) but didn't necessarily do what the assistant notes. Did you try rebooting the AE?

 

[maxymina]

yes, i've tried that. i also tried deleting the preference and network configuration files and creating a new wi-fi network location

 

[chscag]

There are still some connection problems with Yosemite even after the 10.10.2 update. Not all Macs are affected. Yosemite 10.10.3 is currently in beta and is being tested. Wait for that update to see if it fixes your connection problem. In the meantime you'll just have to do an AE reset after waking the iMac. Or, connect the iMac via ethernet if possible.

 

[maxymina]

thanks, sigh! i'll have to wait...