52 responses

  1. Tim
    November 13, 2017

    Another option is to wait to upgrade until Apple gets its act together. I don’t know how many times over the years they’ve released a new OS, and there are wi fi issues. Too many.

    • INWDC
      November 13, 2017

      Apple’s flaws only get worse with each passing year. Its golden years have sunsetted and most likely you won’t be getting the fun and functional experience Apple was once known for. Think of Apple as an American car company – was once great but now it’s just a shadow of it’s former self selling mediocrity with a sole focus to reward shareholders.

      • Zac
        November 14, 2017

        I agree. The focus clearly has shifted to the investors and shareholders. The board represents them and they are making the decsions.

    • Oscar Laurens
      November 28, 2017

      Updated to High Sierra and immediately I got wifiproblems. Attached a cable but it is extremely annoying to see that wifi drops each and every time and nothing helps (no new config, trashing pref-files etc). In this time and age, unbelievable. I was unable to post on an Appleforum. Kaiser-attitudes are growing. The same attitude with the anti-glare coating. How many years in a row does this problem persist?
      I have been using a macintosh for more than 20 years. And I am consolidering switching to another platform as condescending apple has no respect for its customers or users that need to use their machine day in, day out. Just try it without wifi.. writing an article, replying mails, searching the web.. And you need to restart or use an usbfix.

      • phil
        March 13, 2018

        this worked for me after a reinstall after messing it up the first time, be sure to delete the correct files and copy the other ones, most people go back to the old sierra for the mean time until they have fixed it but stupidly i didnt make a backup so i couldn’t https://discussions.apple.com/thread/8098137

        Nov 10 @ 5:41am by Keith is the thread i used

        i must admit its allot of stuffing around an like said in previous posts, do not update on release date because of all the issues. i have used windows operating systems for years but switched to mac, i have 2 issues since mid 2010, compaired to atleast 8 issues a year with windows, i don’t recommend the change

  2. John
    November 13, 2017

    This mambo-jambo should really not be required. If it worked before, it should work now as well.

    • Paul
      November 13, 2017

      Agreed, but sometimes it appears that wifi preferences get toasted during a system software update which then lead to wireless issues. Usually just ditching them and starting over resolves the problem.

      It seems like this happens to some users with every major system software update, it’s certainly not unique to High Sierra.

    • FlyR
      November 13, 2017

      This is simply incredible. When you multiply the number of workarounds by the number of users by the value of their time to the enterprises it is probably billions per act of stupidity. Worse medical offices can not respond, Parents do not have access to information.

      There’s an old Northrup ad totally saturated black page with shinny steel ball bearing – simplicity is the ultimate sophistication.

      It’s time for Apple to stop treating its customers like a pack of zombie gameplayers with nothing to accomplish tomorrow morning.

  3. Robert Patoine
    November 13, 2017

    I try to solve that problem for the last days. You give me the solution with the removing of some files. Great job thanks

  4. V-J
    November 14, 2017

    Thank you. Can you now find a way to get back the Guest option on the Login screen? Mine has disappeared with the new OS, and I can’t get it back through the System Preferences. I liked having it available so visitors could do their homework, job applications etc without me having to worry about them changing my files.

    • arnnnn
      November 14, 2017

      System Preferences – Users & Groups – authenticate by clicking the lock, then select the Guest User Account in the left hand pane, then check the box “Allow Guests to Log In to this Computer”.

  5. Helen Wyvill
    November 14, 2017

    I downgraded to Sierra, and now my Mac works fine.

  6. Daniel
    November 14, 2017

    Just disable airdrop using “defaults write com.apple.NetworkBrowser DisableAirDrop -bool YES” in Terminal and all problems of WiFi will go away. Log out. Login. All good.

    • dan
      November 14, 2017

      Disabling AirDrop will disable AirDrop, it will not solve wifi problems. Think about it.

  7. Lee
    November 15, 2017

    “Down” grade to 10.12.6, all problems gone. Now no video bugs, I can see the login screen, Mail works, no stupid finder problems. 10.12.6 is faster than 10.13. Oh and Server is a server again, iOS/WebDAVS support, SMB sharing without guest access enabled. Apple have lost the plot, concentrating on rubbish with over priced phones, watches and TV programs, all the rubbish to complete the illusion!

  8. Ed
    November 24, 2017

    Thank you! This solved my problem. For now. It’s always something with Apple. You know a company has lost its way when even a Genius warns you never to install a new os within the first 6 months of its release (true story – and that was 3 f*cking years ago. You’d think the company would have its act together by now).

    P.S. – why are we forced to listen to Rhapsody in Blue when viewing this page? Really annoying.

  9. Luca
    November 25, 2017

    I just fix it the issue at the moment Turing off the bluethoot. now the wifi is always connect and works properly !

    Try it ;)

  10. Nasra
    November 25, 2017

    So this article is about High Sierra network prefs but the author is using pictures of Sierra network prefs… smh

  11. Darnell
    November 26, 2017

    Deleting a kext file from some old internet protection software (NetNanny) MAC did fix the problem.

    From Finder, select Go, and type in Library/Extensions. You will see kext files there.

    This worked for me after trying lots of other things.

  12. Steve
    November 27, 2017

    I just added the DNS entries listed above, previously had just, and it’s working like a champ.

    Thanks for the tip.

    BTW – don’t listen to the advice about making changes on your router like creating new SSID. There’s nothing wrong with the WiFi it’s a MacBook issue.

  13. Jay
    November 28, 2017

    Have had wifo problems since 2011 on my imac, today it has dropped over 12x! Spoke w/ apple today who is aware of it but doesnt have a fix. Im about to just get an ethernet cord and a separate modem! So tired of this

  14. Olga Ialanskaia
    November 29, 2017

    Thank you for providing these instructions. I just applied “add a new DNS” fix and it seems to be working. Need to give it a day to see if it is indeed fixed. Thank you so much!

    • Olga
      November 29, 2017

      Nope, happened again. Didn’t fix the issue for me :(

  15. Rebekah Fassler
    November 29, 2017

    I updated to High Sierra and I wouldn’t connect to the WiFi after doing all the methods. I even spent 7 hours on the phone with Apple they did crap. What finally did the job is deleting Adobe

  16. Pierre
    December 1, 2017

    Tried all the solutions here but none of them worked. The problem was a corrupted USB key attached to the Mac. Once removed everything was fine…

    Not sure if these all in one ports are the best solution.

  17. Adam
    December 5, 2017

    The following worked for me on two MacBook laptops!
    First copy data from following folders to a new folder:


    Internet Plug-Ins

    Then delete all content in these folders. Restart mac.
    Speed increase was from 2mbit to 78mbit on an a new mac and from 8mbit to 76mbit on laptop from 2011 on a wifi with 80mbit max download speed.

    If this works for you, this article can be updated !

    • Cathy
      December 30, 2017

      May I ask how to copy those content? It is not allowed to copy those files at all…

  18. Eloren
    December 6, 2017

    I downloaded the Mac High Sierra yesterday and have had constant Wi-Fi drops ever since, one even lasting an hour! I simply could not get back on! Beyond frustrating when you have a project to complete in a short timeline. Unacceptable from Apple.

  19. Rami
    December 7, 2017

    I have tried all of these solutions and even most of the solutions in the comments, yet my 2017 MacProBook has trouble retaining a connection to a wifi that all the other non-apple devices stay connected to easily.

    Usually the ProBook connects, and after 5-20 minutes of operation disconnects and cannot connect anymore… I don’t know what to do. I can’t go fiddling around with the routers as no one else in the office has the same problem.

  20. Jon W
    December 7, 2017

    Have found a solution- am going to Currys/ Pc world to buy a Windows laptop and will dump my useless, pointless and irrelevant MacBook Pro in a drawer until Apple decides to stop peddling garbage to its customers.
    Simply unfathomable amateurish nonsense – this on top of all the obsessive-compulsive tax dodging from the richest company in the world make me not want to come back. I HAVE WORK TO DO AND CANNOT DO IT.

  21. Candace
    December 8, 2017

    I have a Mac mini and am having a myriad of problems since I upgraded to Hi Sierra. Biggest problem is connecting to Wi-fi. I tried ALL of the suggestions and nothing works. I don’t know what to do next. I am able to use an unsecure Wi-Fi network (a neighbor’s I think) but I would prefer to use my own secure network. I don’t know what to do next. Oh, other problems include slow internet, no notification banners, occasionally receive error message when I delete a file, sometimes I have trouble closing a page/file and it grays out and I get a spinning symbol and it just hangs. Any suggestions?

  22. Bobby
    December 9, 2017

    I don’t understand how this fails. I have a MacBook Air that has no issues at all with high sierra, but my iMac just won’t work, regardless of what I do. too Strange, I even tried copying all the network files from the Air to the iMac, but even that did not work.

  23. Bobby
    December 9, 2017

    I don’t understand how this fails. I have a MacBook Air that has no issues at all with high sierra, but my iMac just won’t work, regardless of what I do. too Strange, I even tried copying all the network files from the Air to the iMac, but even that did not work.

  24. Santos
    December 10, 2017

    I even can’t understand why only some MacOS High Sierra. And also only in some routers. OF Course that’s a compatibility issue, but no make sense you have a computer that works by a chance, when it wants, and no update to fix from the manufacturer. I tried all these tricks but no way to works as should. I wait until end of year for a fix, otherwise my only option is downgrade.

    • Bobby
      December 12, 2017

      I agree, it is sad that I spent over 2k for a computer that cannot make a simple Wifi connection. My Raspberry for less than 80 bucks does it without special code

  25. Bobby
    December 12, 2017

    If anyone is interested, I created a script that you can add to your login applications. Just save this with the automator.. replacing the SSID with yours and the Password for that network. (note, my iMac’s wlan device is en1, if you have a laptop it will be en0)

    set input to “1”

    delay input

    do shell script “networksetup -setairportnetwork en1 SSID PASSWORD”

  26. kjetil
    December 14, 2017

    This worked for me:

    I had two SSID with the same name and pw; one 2.4ghz and one 5ghz.

    1: disabled the 2.4 in the router
    2: connected to the network
    3: enabled the 2.4 again

    Worked like a charm.

    • Bobby
      December 15, 2017

      During boot up my iMac won’t find any of the saved wifi addresses. Once I run the script it connects, but after my screen saver is activated or it goes to sleep, on wake up my iMac identifies (actually See’s) the Wifi addresses, even my hidden network, it just refuses to connect to them without a manual push.

      Too bad I can’t just copy the settings from my mac book air or mac book pro, both of those work without issues. I think the programming error is made with machines that have both en0 and en1 devices, not ones with just a wireless connection, both as default and only connection.

  27. Bobby
    December 15, 2017

    I will wait for the next version of macOS for a resolution. If that doesn’t work out then I will downgrade back to regular Sierra. That appears to be the only option

  28. Michael G.
    December 31, 2017

    If it’s any consolation, I seem to have run into this every year or so through several upgrades–and without upgrading. I still have Sierra (10.12.6), and wireless just started dropping again. I can work around it for a while by changing SSIDs, but this morning I couldn’t stay on any of 4 SSIDs.

    So I had to go through and delete my preferences and delete my location and all that. While I understand that in-place upgrades can cause unexpected issues (I’ve done a lot of them), for the most part MacOs/OS X has handled them reasonably well.

    Apple however does need to get their act together on this, and a number of other issues.

  29. SamiNole
    January 3, 2018

    Thanks!!! My wi-fi was miserably slow after the upgrade…I followed the steps in “Optional: Make a New Custom Network Location” and it is back on fire. Happy New Year

  30. Adam Stephen
    January 8, 2018

    Also suffering from network instability immediately after “upgrading”. In my case, not only is the Wifi connection lost repeatedly, but even a wired NIC connection is going up and down. Trying to contact Apple support, but only ever get a promise of a chat session that never seems to materialise. Maybe I should investigate taking legal action to recover lost earnings due to wasted time?

  31. Anthony
    January 14, 2018

    The most common issue in this scenario is that we all have MC and upgraded to “High Sierra” .. Really Apple its probably juts hypoxia. WTF.

  32. Jack
    February 1, 2018

    I have tried all of the above, nothing works other than re-logging into my network every time my 2011 iMac wakes up. The upgrade worked fine on my 2012 MacBook, but the iMac fails every time. The thought of downgrading the OS is nauseating – if they didn’t test something this obvious, how was the testing on the OS downgrade?

    How on earth could nobody at Apple have noticed this?

  33. William
    February 3, 2018

    This website fixed all my problems thank you so much I was about ready to throw this computer across my room

  34. Patrik
    February 12, 2018

    I have been troubleshooting for weeks at different customers and found that it seems to been problem against AP with AC Wave 1

    Testing against AP with AC wave 1:

    Elder Mac Book Pro (2011 or older) with 802.11an card has no problem.

    Old Mac Book Pro (2013-2016) working ok with up to El Capitan (10.11.n) where drivers are Core WlanKit 11 or older.
    Even better with Yosemite (10.10.n)
    If the drivers are Core Wlankit 12 or newer ( Sierra 10.12.n ) it works crap.

    New Mac Book Pro (late 2016 with touch and newer) Works ok with Sierra and really good with High Sierra 10.13.n!

    (Earlier test shows the same behaviour with other MACs such as MAC Book, and MAC Book Air.)

    Testing PC to see if it is something with net or Mac:

    HP with Intel AC card has no problem at all.
    Expected speed at speed test and not a singel ping loss.
    Running 4×6000 ping to default GW, Server on next net, and the AP on same net as client.
    Comparing to updated 2013-2016 MAC has more than 20% loss to all of them.

    Conclusions after tests:

    – Some thing goes wrong with an updated old Mac book pro running against AP-AC wave 1

    – Don’t update a older Mac to more than El Capitan (10.11.n) and skip updates for hardware.

    – Update a New Mac Book Pro (late 2017 or newer) to latest MAC OS. ( to day 10.13.3 ).

    • s_flab
      April 23, 2018

      I have late 2016 MBP and I have a very specific issue which I haven’t seen discussed here: my laptop simply rejects the correct passwords for some networks. I haven’t managed to connect even once to my work wi-fi, I get 50/50 on my home network (only for 5GHz) and around 90% success on my iPhone hotspot (which is oddly 2.4 GHz). On top of that, it occasionally disconnects, it doesn’t hold on to the connection when it’s asleep and etc., but this was mentioned in the comments here.
      This all happened overnight after upgrading to 10.13.4. Feel terribly betrayed by Apple…

  35. Offbeatmammal
    February 24, 2018

    weird problem just started for me recently … when I come out of sleep, my Mac (10.13.3 on a Macbook Air) forgets the DNS entries I’ve manually entered, and reverts to the ones from my DHCP server (which is the ISP supplied modem, and I can’t override the default DNS on it).
    has anyone else seen this?

  36. PhilZvil
    March 11, 2018

    Thanks to http://dosdude1.com I could update my mac mini 3,1 from late 2009 from Maverick to High Sierra. He warned of the possibility that the wifi network card will not be usable after the update with his patcher. This did not prevent me from installing High Sierra. Well guess what the network card is not usable anymore. Ok first I did not mind till I realised that Philips Hue only interacts through a wifi network and not over bluetooth, which I first assumed. I have been searching for wifi dongles that are compatible with High Sierra so far without success. Has anyone found a wifi dongle which works?

  37. Luke Braz
    March 29, 2018

    I am at University and had trouble connecting to the WPA2 Enterprise wireless here. I went through keychain access and tried all options but the 3rd listed to no avail. The solution I found was manually selecting “Join Network” rather than clicking on the wifi account name and only inputting the password. Something about inputting the airport name myself made the computer remember the network. Hopefully this helps some of you.

  38. Alex
    April 13, 2018

    gracias mil gracias


  39. Bobby
    April 29, 2018

    Finally fixed with version 10.13.4 😀 only took 7 months, but hey, better late than never. Thanks Apple. Now if only my iphone would work like it did when it was new…LOL

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