10.13 High Sierra Wi-fi issue

we will have to wait until next September for the newest OSX and hope it is fixed then. I would have liked to use my mac at work, but we have PCI compliance there (Payment Card Industry) which requires either hard wired Lan lines or hidden SSiD's, well with just the option of WLAN no Mac

I have a MBP (mid 2010) and was having problems connecting to wifi with Sierra OS. The internet guy gave me a new modem and router, switched to 5G and everything was working good until the upgrade to High Sierra. Slowed my operating speed wayyyy down. Can I go back to Sierra and how to?

Just found this out after moving over to High Sierra. No problems connecting with IOS devices, but with my MBP it will not automatically detect and connect to my home WIFI until I re-enable SSID broadcast. An official fix for this from Apple is urgently required.

I agree, and the last update for my Apple TV-4 no longer allows it to connect to 5Ghz. I am going to take it to my nearest pond and since it has a really nice flat side, I bet I get 16 hops before it sinks.

Have a Retina MacBook (8,1) from 2015.

WiFi issue: on awakening, the WiFi shows connected but isn't. Changing connection points does not solve the issue.

Current Work Around: If I turn off the WiFi on my rMB and turn it back on, the WiFi works as should. The issue is only with this device and none of the myriad of other devices I own. I have looked at and tried a couple of the suggestions here with no joy.

Definitely a software issue.

Okay, check it out, I fixed this issue with a bit of serious thought and a good work around. Although a permanent fix this might not be, it does work. First off I had to think about how the fk does apple work in the first place, everything we see on our desktop and runs is basically happening from terminal commands. So I figured what is the terminal command to join a wifi network, once I had that working, I figured I could use apple script to launch the command at startup. Since high sierra does try to attempt to join the network during boot up, I had to add a delay, in my case 45 seconds before it (the script) tried again. Well long story short it works. below is the Apple script command I use. I cheated a little and let Geektool do a OSA run on the script, but still it doesn’t matter how you want to have it start up.

EnJoy 😀

the 45 is how many seconds to wait until executing the script, the rest should be self explanatory.

I know it isn't nice to have your password as plain text, but hey, you have to type it in each time anyway.

######################apple script####################################################

set input to "45"

delay input

do shell script "networksetup -setairportnetwork en1 yourhiddenSSiD yourpasswordforhiddennetwork"

Edit:

I just realized it isn't necessary to add the password for rejoining a saved hidden SSiD network.., So you can leave that out.😁😁😁

I had the same issue you guys have and after serious hours of troubleshooting I figured that my AT&T router has a feature called Band staring. For the feature to work you have to setup both band SSIDs 2.4Ghz and 5.0Ghz) with the same name, So the computer will decide to connect to the band that offers a better signal levels. Apparently High Sierra does not handle this very well and gets confuse. As a temporary fix, I have set diferent names for the SSIDs and now I can connect to either band with no issues. It will connect at wake ups or reboots. Apple still need to come out with a solution for this.

Hopefully this would work for you guys.

MBP 13’ mid 2012.

Remove the WIFI from your preferences and or first include a reboot.

That fixes it for me for awhile. Some networks require me to move them to the top of the list.

If I remember to do a restart every week prior to that, it seem to take much longer to come back.

That doesn’t work on mine. All hidden networks are forgotten regardless of what I do before reboots or wake ups. Only the Script that I use now to run on startup works, and that only until my mac goes to sleep. On wake up I have to manually run either the script or manually search and join the hidden network.

Apple really needs to get this fixed. Maybe we get lucky and the patch they are sending out to fix the root login with no password issue will have a wi-fi fix included.

Have you tried monitoring your network through wifi diagnostics?

Have you checked through Airport Utility to see if there any updates?

Have you tried removing NETWORKS previously connected (a hassle yes) but will often resolve the issue.

Since you don't get it.

Here

Installed CLEAN High Sierra on empty HD, Wi-Fi fails to connect to hidden networks at login. It can't even remember previously saved connections

Installed Mac High Sierra over Sierra, Same Result as clean install

Installed CLEAN Sierra, Wi-Fi Connects with no problem to Hidden Network, did another upgrade to High Sierra and it fails again.

Installed El Captain and upgraded to Sierra, then High Sierra, Wi-Fi works just fine on EVERY SINGLE OS EXCEPT FOR HIGH SIERRA.

<Edited by Host>

It is clearly a problem caused by Apple in High Sierra, which I expected was fixed by 10.13.1 but no. I tried all the possibilities reported here. But as I reported earlier, the only thing that worked was to use a different wifi username and password for the same (AT&T) router, which I had already created some time ago and deleting all the former wifi accounts in system preferences, which are usually remembered.

When I tried using my original wifi account again, the problem came back. So I switched back to the new account I was using. Also when traveling other wifi accounts were just fine.

I was on chat with Apple Support for 3 1/2 hours last night trying to get this issue fixed. iMac 2009 installed OS High Sierra Wednesday subsequently no internet connection. I have read all the posts here and we have tried just about everything mentioned. I have made an appointment to take to Genius Bar. But now I am not so sure I will get the help I need. Not even Apple Support told me this was a known issue. I have never had a problem with my iMac since I bought it in 2009. This is the first issue. 😟

I've upgraded 10.13.2 and I still can't connect to 5Ghz reliably. When I do connect, I'm lucky to get 5-10Mbs down. I've tried everything on every forum I can find. So I'm stuck using 2.4Ghz like it's the 1990's.

I'm new to these forums. Does Apple ever actually assist anyone here or do these posts just go into the ether?

I ended taking my iMac to Genius Bar where they wiped everything off and installed Sierra... I’m able to now connect to internet. But I find some issues with software I’ve downloaded ....not functioning properly...