10.13 High Sierra Wi-fi issue

I have macbook mid 2012. With Sierra there were already problems but with High Sierra it got really bad. The SSID is open, I reinstalled again after upgrading, but the problem remains. It is searching for networks and then gives up. Sometimes after wake up it finds the network and connects and a few minutes later the connection is lost. It is not because the computer is far away from the router. I never had this problem before.

Just in case it helps someone, YMMV... Had the same issue this morning...

High Sierra 10.13, MacBook touch bar.

Wifi won't hook up, sees network, but stays in search mode. Moved closer to the router, inside the house, wifi connected after a minute or so.

Now happily back on the deck... This was not issue before update to 10.13.

Another item, when I get the popup for select a wireless network it stays on the screen and can't be selected out, closed. Only way to close the pop-up is to logout and log back in. - Just another feature that High Sierra is showing.

Did you get the pop-up that won't close too?

I have resolved the issue. I had to install a new hard drive on my macbook pro anyways. Then I first installed a new copy of High Sierra from an installer. Wifi only occasionally worked, when the computer was directly next to the router, as others had reported too. Then I erased everything and installed all my data directly from the time machine. Wifi was not working. Then over that I installed a fresh copy of High Sierra. Wifi was not working. I cleaned the list of Wifi addresses except for the address in my house. Then I moved the following files in /Library/Preferences/SystemConfiguration/ to the trash as had been reported by others. I also deleted an old file there preferences.plist.old. When I restarted the computer the problem was gone and Wifi is since then working well. However, doing this it is recommended to back up all data.

com.apple.airport.preferences.plist

com.apple.network.eapolclient.configuration.plist

com.apple.wifi.message-tracer.plist

NetworkInterfaces.plist

preferences.plist

All the solutions, deleting files etc, worked only temporally until I restarted the computer or the computer was asleep. However, I have a second account on my home wifi. When I chose that and logged into that account, it stayed logged in. When I restarted the computer it was still ok. I deleted the old account in network settings. When I chose that account again to log in, there was the message that the password was invalid even the password was the correct one. I have no idea why that is happening. But using the second account seems to have resolved the issue.

Really do wish it was this simple, as mentioned in a previous post, I've tried all of the suggested solutions and none have worked for me.

I have not yet upgraded the two remaining laptops to High Sierra because of the issue, the rely entirely on WiFi and can not be connected to the internet by wire

Same problem here too. Broke connection to Asus router, where SSID is hidden. My workaround solution is connection with android tethering/hotspot with public SSID which works. Can't access my LAN files now though.

THE FIX

BETA test the software before unloading it to LIVE.

READ reports from those BETA testing.

APPLY fixes for the bugs found.

Most importantly, DO NOT put a BETA software out as LIVE update until bugs are fixed!

Macbook air, No WiFi after update. Recovery mode had WiFi but not normal boot up. We had to get the password for the WiFi and reinstall it. IF WiFi works in Recovery mode, why not normal start up?

Senior adviser said I was 'being awkward ' when I refused to install the password again. I told him to f off and work on the problem. I explained that Apple should not put out a broken update before fixing bugs. WiFi should work if its in Recovery mode.

Hey I found a helpful youtube tutorial if you search "sierra wifi fix"...should be the first option but the user's name is "oowwnn" and the video is called "unsupported Mac Sierra install wifi fix". The user has a link in the video description to a script that he made. I was having this issue and I strongly think it's a Broadcom wifi card driver incompatibility issue. I have a 2011 Mac as well. Basically Apple did nothing to help my issue as usual and I had to find a user that wrote a script to update the driver...this worked for me. Hope this helps and hope even more that Apple will fix their compatibility issues before pushing out new OS updates. Relying on their customers to fix bugs is getting outdated.

Chuuurch!!! The sad thing is that there is always some sort of issue like this when Apple releases any new OS. STOP IT APPLE!!! You keep saying you want to be in the enterprise environment, but you do stuff like this.

I have the same issue on MacBook 13" Pro 2012. After Upgrading to OS High Sierra 10.13, The Wi-Fi connections dropped. It does not matter if it is coming from sleep or reboot, it looses it. My SSIDs are not hidden. I have a Dual band AT&T Router. 2.4Ghz and 5.0Ghz SSIDs are named the same. Previous version of Sierra never had this issue.

I do not have wired connections, so it is imperative to get a solution as soon as possible.

HELP ! ! !

I always thought OS 10.13.1 would have fixed it, but that was not the case. I recommend to create a second account for the router at home with another user name and password. I have an AT&T router and that worked for me.

I have a Mac Mini and my WiFi cut out while I was browsing the internet. In spite my looking at forums and going to Apple’s website for troubleshooting my Mac is unable to detect the router in our home. In short I want to let people know this is a problem not only with iMac but also with Mac Minis. I am going to have to take my Mac in to a tech to fix my problem.

I have both an iMac and a MacBook Pro and both have the same problem. The Wifi link to Airport Extreme drops off every time they sleep and when I go back the Wifi is linked to my wireless HP printer. I have to go into System Pref and manually switch to 5GHz each time. Very annoying.