Problem of Wifi share with 5Ghz

Updated to the latest system, the wifi share works with 2.4Ghz while crushes under 5Ghz. Any idea regarding this issue? By the way, I used to share Internet through Wifi and it kept working. However, it begins to interfere with Bluetooth since upgraded to 10.13.4.

Any ideas much appreciated, thank you!

MacBook Pro (15-inch, 2017), macOS High Sierra (10.13.2)

Posted on May 8, 2018 6:28 PM

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6 replies

May 9, 2018 5:55 AM in response to simonyangfromcoventry

Wwhat are you connecting?


If it is other Macs, you can use the Option-Wi-Fi snapshot to look at signal levels, Transmit rate, and see if you can determine what is happening.


There are additional tools under Wireless diagnostics that can show you exactly what other devices are on which channels -- you could be colliding with a neighbor's Network. Option Wi-Fi give you a snapshot like this:

User uploaded file


and the Scan pane give you this, showing each network by channel:

User uploaded file

(arg and drop on Preview to see larger)


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Problem of Wifi share with 5Ghz

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