TP-Link T9UH / AC1900 windows 11 5Ghz connection issues FIXED

3 weeks ago

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Registered: 2025-11-03

TP-Link T9UH / AC1900 windows 11 5Ghz connection issues FIXED

3 weeks ago

Model: Archer T9UH

Hardware Version: V2

Firmware Version:

I've finally managed to fix the issues with 5ghz connectivity / driver issues on the T9UH / AC1900 USB dongle.

I used the instructions in this reddit post:
- https://www.reddit.com/r/techsupport/comments/vleq0i/fix_realteks_usb_wifi_dongle_randomly/

plus this comment

- https://www.reddit.com/r/techsupport/comments/vleq0i/fix_realteks_usb_wifi_dongle_randomly/nmuo4za/

The adapter was completely unusable before, but now it works with 5Ghz no issues so far.

I think I'm using the microsoft driver.

1 Reply

Thursday

Posts: 22722

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Registered: 2018-12-24

Re:TP-Link T9UH / AC1900 windows 11 5Ghz connection issues FIXED

Thursday

Thank you very much for sharing the instructions or fixes for any abnormal or unexpected behaviors on our adapters.

We'll check whether we can include some of them in our standardized troubleshooting guides.

Thanks again for sharing.

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