Wi-fi randomly stopped working on my MacBook Pro

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Level 1

32 points

Wi-fi randomly stopped working on my MacBook Pro

Today the Wifi randomly stopped working on my m4 macbook. I first noticed that the wifi extender next to me kept blinking and wouldnt stop blinking. and shortly after that i got some pop up saying Core Sync wants to be able to connect to devices in my network so I pressed yes and shortly after that the wifi stopped working on my laptop but works on all other devices in this house. I googled the issue and tried a bunch of stuff: restart, shut down, dns flush, I ran disk utility, I pressed forget network and now every time I type in the password it cant connect. I ran diagnostics but of course that never does anything. And then weirdly out of nowhere I go a pop up that said This computer's local hostname is already in use on this network. The name has been changed to (redacting name here)-2.local. That seemed really odd and random. I'm typing this message plugged into the wifi. No I have not power cycled the modem/router cause I'm scared once I do that I wont have any internet at all. yes my software is up to date. I'm on sequoia 15.1.1

[Re-Titled by Moderator]

MacBook Pro 16″

Posted on Nov 28, 2024 09:38 AM

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Answer 1

Dec 23, 2024 03:49 PM in response to rachinc1

I just took the new M4 MacBook Pro out of the box and signed in with my Apple ID, and joined my wifi network. I tried to use the migration assistant to transfer data from one of my older laptops. I was unable to sustain a WiFi connection. I restarted the router, eight feet away. I restarted the laptops, turned off WiFi several times and tried it over and over, but the WiFi refused to stay connected for more than a few minutes, before disconnecting. Very frustrated, so I just skipped the data transfer. Now, it is three days of new ownership and I am moving about the house, unable to keep the connection. Every other device in the house has a good full connection, including 3 iphones, a few smart TVs and six other Macs, and a PC. Very disturbing.

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Answer 2

AlWeir

Level 5

4,096 points

Nov 28, 2024 12:46 PM in response to rachinc1

If there is another device on your network with the same name the OS will automatically change the hostname, that is why you got the name change. This is to stop conflicting wifi channels from crashing into each other. No sure if the extender is doing and wonder if you are in range of the router without the extender.

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Answer 3

AlWeir

Level 5

4,096 points

Nov 28, 2024 01:03 PM in response to AlWeir

You can find out what is on your network. There is a free app on the App Store called ( WiFi Explorer: Scanner ) and it will scan your network and you will be able to see what in on it and the channel s different devices are using. If you enable all the options in it you'll get a overview of what might be causing the problem. If you have neihbours that are close to you you will also see theirs as well, but just look for your network.

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Answer 4

rachinc1 Author

Level 1

32 points

Nov 28, 2024 01:08 PM in response to AlWeir

I dont follow. "you can find out what is on your network", you mean like find out all the devices on my network? I'm not sure how that information would be helpful to know. If I scan it for a channel on the wifi explorer scanner app, how do i go and change that channel on the modem/router?

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Answer 5

AlWeir

Level 5

4,096 points

Nov 28, 2024 01:43 PM in response to rachinc1

You would have to find the directions/manual for the router. Some are fairly easy to use, while others are some what complicated. What you might consider is using a Mesh system rather than a wifi extender. I ran a Extender last year but moved so that eliminated the use of it. Get as close to the router as you can. With a Mesh system is you have a lot more leeway a t getting a better signal for your devices.

wireless mesh network (WMN)

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