I never had a wifi issue until I installed mavericks on a computer in another house. Both have a BT Hub3 router. I turned off the router for a minute and then on again. It takes a few minutes to reconnect. It saw my network and asked again for the password. There was a message about the encryption standard used. It now uses "WPA/WPA2 Personal", so I suspect the router had been set to another option before.
Anyway, the connection is now fine. It may account for your other devices, if there is a mixed standard on the network?
I tried many of the suggestions including setting up new location, deleting all entries in nw prefs, renaming or deleting the plist files, etc. None of them worked.
This morning I went into Systems Prefs\Network\Advanced and unchecked "remember networks this computer has joined" and network disconnects stopped happening. Didn't even need to reboot for it to work.
Not ideal solution but seems to have stopped my short term pain.
I really can't believe it... this solution finally worked for me!!!
i've been suffering from this frustrating, random and VERY frequent connection drop outs for around two years, some time after i bought this imac (dec 2011), after the first or second OS update, it started happening...
I tried every solution posted on the internet (believe me!), some worked for a short time and some didn't at all...
But the last days of this problem, the connection started to drop every 5-10 seconds, 10 minutes tops.
Maybe my problem had something to do with file corruption in those folders, and the OS updates didnt replaced/fixed/deleted them or something like that...but now i've been having a normal, fluid and fast wifi connection for 3 days now!
i still dont believe it...
Here's what i did:
- Zap PRAM (3 times in a row)
- Deleted the WiFi related keychains
- Deleted and re-created the wifi option in network preference
- Deleted the files inside the SystemConfiguration
- mikich fix:
1) Boot in the safe mode: shutdown the computer, press [shift key] + [power key]
2) Delete all in folowing folders ([shift key] + [cmd key]):
3) Reboot normally
and that's it...
Hope it helps
Using Apple Airport Extreme 5gen and iMac 2010 with Mavericks on board. After I test networks with NetSpot I got message (screenshot)
What the h*** does that mean? Airport has number of regions in the list, my region is not in the list by before Mavericks everything was at least working, I can write fine but working. But now..
How it can be fixed, how can I get 5Ghz wifi on my imac?!!
Apple why are you becoming so MS company?
both iphone and ipad see 5ghz network and join it well.
I did this and then spent close to four hours trying to figure out how to get my computer working properly again. It was at the point that zapping the PRAM did nothing, resetting SMC did nothing, I was having to force quit via holding the power button (every single time I needed to restart), half of my preference panes were hanging with the beach ball and having to be force quit from Activity Monitor, and even doing things in Safe Mode wasn't getting me anywhere. I ended up reinstalling Mavericks, and now it's fine. My wireless signal is still at about a third of the max number I've seen it (Transmit Rate: 120 is the highest I've seen, and it's currently at 39 and holding there). It's highly possible I need a new router; ours is old, and I'm not the only laptop in the house having problems with the wifi dropping for no obvious reason.
The unchecking of "remember networks this computer has joined" is not an option for me. I move from school to school, a total of 36 all together. I cannot be typing in passwords everytime I move around and remove the past networks. This is insane! I hope I can find another option.
There are good wifi diagnostics available by holding the Opt key and clicking on the wifi icon. "Choose "Open Wireless diagnostics" and then go into the Window>Utilities menu and the wifi scan tab.
If you are using the same channel as all your neighbours, enter the router webpage and change it there.
Great advise! Thank you a lot. It's really useful for diagnostic.
THIS FIXED IT ON ALL MY COMPUTERS running Mavericks:
- open Terminal (Apps / Utilities / Terminal)
- type "caffeinate" without the quotation marks and press enter
- nothing will happen but leave that window open
The problem, in my case, was that Mavericks was going into some sort of sleep mode even though I hadn't activated the sleep functionality when plugged in. In fact my screen worked perfectly and the laptop wasn't sleeping.
However, Mavericks seems to sleep on some level.
CAFFEINATE seems to keep it always on. So when I leave my laptop backing up all day or downloading some big file it never loses wifi connectivity anymore.
Let me know if it works for you too!
This did not work for me, either. It seems every "fix" seems to work for a day or a couple of days, and then it goes back to not working.
I'm going to call Apple, and I'll post their reply. My last fix worked for 2 weeks, and then didn't work anymore.
I have another method working well in my case.
1. Open a router setup page (usually it's admin's web page where you could manage your router)
2. Go to the wi-fi section.
3. Go to the 'Security' part of wi-fi section.
4. Go to 'AES/TKIP' security mode switch (usually leaves in 'AES/TKIP' mode) and set 'AES' mode.
5. Apply change and reboot router.
I found this method in the technical article concerning 802.11n implementations. The article have clearly state: 802.11n is specifically sensitive for wi-fi security method and working well only in 'AES' security mode.
I start to dig it because my MacBookPro/Mavericks is working great with my home router (802.11g) but behaves really terrible with my office router (802.11n) - until I switch them to AES mode.
I would be happy if this kind of solution would be useful for anyone who encountered with wi-fi trouble.