Mac Big Sur cannot even connect to my wifi adapter

Question

Created Jul ’20

Replies 6

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Participants 7

My MacBook Pro 17 was always having wifi connection issue. I had tested it with my other laptop next to it, and my other laptop can have really good connection to same wifi. However, due to corona and I had to work from home, so I bought a wifi adapter (TP-Link USB Wifi Adapter, Archer T2U Plus model).
I am able to use the wifi adapter until I upgrade Catalina to Big Sur Beta. After system upgrade, the wifi adapter doesn't even blink at all! At first, I thought the upgrade process burns the device. I tried to plug wifi adapter to my other laptop, with usb-port only and type-c convert in between as well. Windows 10 is able to recognize this device twice! So my wifi adapter has no issue, yet Big Sur Beta cannot even recognize it!
I also tried to reinstall the driver, and after restart wifi adapter still can't blink!
How can I fix this mac's wifi issue or make it recognize wifi adapter?

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Answer 1

vdolmstead OP

Jul ’20

My MacBookPro 15" Retina had the same issue when I installed MacOS 11. I didn't plan to but my last beta update for Catalina was corrupt and the only way I could gaing contol was to do a CMD R and reinstall. It chose Big Sur. Since it couldn't identify my WiFi network on retart after install, there was no way to trouble shoot. So I found a Cat5 cable and headed to my router. As soon as plugged in the Cat5 into Thunderbolt adapter, it found everything, connected to Ethernet and WiFi simultaneously. Give that a shot and see if that helps.

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Answer 2

Denkrsn OP

Jul ’20

Same problem on MBP 13 2017 with 3 ports . System after restart doesn't hold wifi . Network search is also unavailable. :(

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Answer 3

JennFerr OP

Nov ’20

Did you ever figure this out? Just upgraded to Big Sur, having the same issue with the same device - I am assuming it is because the Archer drivers aren't compatible with Big Sur and that the company (TP Link) will have to update their drivers before it will work again. Is this not the case?

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Answer 4

Dak_Kol OP

Nov ’20

Big Sur will not connect to home theater.

Airplay display preferences cannot be set to HomeTheater. Drop down box has Home Theater but defaults back to "off" when selected.

How to fix this?

Using Macbook Pro Mid 2014

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Answer 5

JSinay OP

Feb ’21

I purchased the same WiFi receiver (Archer T2U Plus) yesterday. I'm running bootcamp on my MacBook for work, and it worked fine on Windows 10. However at the end of my shift I tried to install the driver for Mac OS 11.2, and to my surprise it didn't work. Going on the support forum from Tp-Link I realised the company doesn't care about the lack of functionality, as far to advise customer to re-install previous OS versions or to go against Apple recommendations by disabling the SIP and give the authority of their App on your macOS. (quote from the forum)

Fortunately enough I was able to return the item and get a full refund, and I would suggest the same for everyone that's able and just look for an actually functioning alternative.

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Answer 6

sri695 OP

Feb ’21

Tp-link T2U Plus Wifi Adapter cannot be used for Mac OS Big Sur because the device is compatible only for Mac OS Catalina.

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