exclamation Mark wifi not working

Question

Level 1

6 points

exclamation Mark wifi not working

Ok so I have Mac Air 2013 with Sierra, the WiFi doesn’t work and shows an explanation mark. I have an iPhone and other Mac connected to the WiFi and it works. The thing is I have tried everything, even resetting the Mac to factory settings- and the funny enough, WiFi worked to erase disk and download new Sierra, it seems still to work before I log in and then when I do the same stuff happens.

I have tried everything from DNS server changing, deleting files in library and whatnot, desperate for help :)

MacBook Air 13″, macOS 10.14

Posted on Nov 12, 2020 2:06 AM

Reply

Answer 1

Top-ranking reply

BDAqua

Level 10

250,253 points

Nov 12, 2020 6:05 AM in response to NataliaYr

Make a New Location, Using network locations in Mac OS X ...

System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.

System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.

The interface that connects to the Internet should be dragged to the top of the list.

Sys Prefs>Network>highlight the Interface you're using>Advanced>TCP/IP>Configure IPv4: Using DHCP.

If using Wifi, instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.

System Preferences>Network>choose interface>Advanced>Proxies Tab, make sure none are set, like for HTTP & HTTPS.

System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...

8.8.8.8

8.8.4.4

1.1.1.1

9.9.9.9

Apply.

Reply

Answer 2

BDAqua

Level 10

250,253 points

Nov 12, 2020 11:41 AM in response to NataliaYr

Just checking... did you choose DHCP for Wifi?

Sys Prefs>Network>highlight the Interface you're using>Advanced>TCP/IP>Configure IPv4: Using DHCP.

Reply

Answer 3

Nov 12, 2020 2:45 AM in response to David McKinlay

Or you could also consider by-passing the problems you are having with Sierra and upgrade your Mac as far as Big Sur - but do your homework to see what applications you will not be able to use in a 64 bit system

Reply

Answer 4

NataliaYr Author

Level 1

6 points

Nov 12, 2020 11:04 AM in response to BDAqua

Amazing it worked! Ok as I started typing it went off again that has been happening, where it pops in for a second, but now is marked the same and is orange and says “Self-Assigned IP” instead of no Ip so at least it is different but I am not sure what to try now. Maybe I missed the step where you say “fill anything as needed” for the WiFi, you meant name and pw right? Or am I missing a step?

Reply

Answer 5

NataliaYr Author

Level 1

6 points

Nov 16, 2020 11:38 PM in response to BDAqua

Ok so it doesn’t work, at least not all the time but sometimes it does, and now I can connect it to HotSpot of my phone so I can at least use the computer as I am working on my thesis but maybe I am not understanding the steps well enough this step in particular I might be doing wrong “If using Wifi, instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.” Could you elaborate? Is this just WiFi name of my router and Pw?

Reply

Answer 6

NataliaYr Author

Level 1

6 points

Nov 12, 2020 2:08 AM in response to NataliaYr

Also, there is no way for me to reset the router, and I wouldn’t understand why either as all the other devices in the same household seem to work?

Reply

Answer 7

NataliaYr Author

Level 1

6 points

Nov 12, 2020 11:06 AM in response to David McKinlay

Yeah I def would but I have no hard drive to update it with, so I am a bit stuck without any WiFi ☹️

Reply

Answer 8

BDAqua

Level 10

250,253 points

Nov 12, 2020 1:52 PM in response to NataliaYr

OK, fingers crossed! :)

Reply

Answer 9

Nov 12, 2020 2:38 AM in response to NataliaYr

It's a puzzle, but I've had this happen in the past. If as you report that the other devices can connect to your router - and the internet - then the problem is not with the router.

Hopefully someone more informed might offer a better suggestion if this fails to fix your problem, but go into System Preferences > Network > Advanced

Then identify your network and click the minus button. This will make your Mac forget the network and (hopefully) the erroneous settings.

Then try to connect to your network again. Hopefully your MacBook Air will think it's connecting for the first time and won't repeat the error.

It's worth a try.

Reply

Answer 10

NataliaYr Author

Level 1

6 points

Nov 12, 2020 12:36 PM in response to BDAqua

Ok I thought I did but now with just changing the name (location name) as I wanted to just do all steps again it came back. Hopefully for good. Will let you know if it’s still on later/tomorrow as it is late here. Thank you so much

Reply

Answer 11

BDAqua

Level 10

250,253 points

Nov 17, 2020 6:14 AM in response to NataliaYr

Is this just WiFi name of my router and Pw?

Basically, Name, then Security type, likely WPA-WPA2 Personal, which then needs the Password.

Reply

exclamation Mark wifi not working

Similar questions