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

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

TP-Link T9UH / AC1900 windows 11 5Ghz connection issues FIXED
TP-Link T9UH / AC1900 windows 11 5Ghz connection issues FIXED
2025-11-03 09:20:48 - last edited a week ago
Tags: #Windows 11 #Network Connectivity #RTL8814u
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.

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#1
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1 Accepted Solution
Re:TP-Link T9UH / AC1900 windows 11 5Ghz connection issues FIXED -Solution
2 weeks ago - last edited a week ago

Hello @frustycusty,

 

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.

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Introducing AI QoS: Elevate Your Gaming Experience on the Archer GE800 Gaming Router! Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router Archer AX90 New Firmware Added Support for EasyMesh and Ethernet Backhaul If you found a post or response helpful, please click Helpful (arrow pointing upward icon). If you are the author of a topic, remember to mark a helpful reply as the "Recommended Solution" (star icon) so that others can benefit from it.
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#2
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3 Reply
Re:TP-Link T9UH / AC1900 windows 11 5Ghz connection issues FIXED -Solution
2 weeks ago - last edited a week ago

Hello @frustycusty,

 

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.

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Introducing AI QoS: Elevate Your Gaming Experience on the Archer GE800 Gaming Router! Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router Archer AX90 New Firmware Added Support for EasyMesh and Ethernet Backhaul If you found a post or response helpful, please click Helpful (arrow pointing upward icon). If you are the author of a topic, remember to mark a helpful reply as the "Recommended Solution" (star icon) so that others can benefit from it.
Recommended Solution
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#2
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Re:TP-Link T9UH / AC1900 windows 11 5Ghz connection issues FIXED
2 weeks ago

  @frustycusty Thanks for sharing! Glad you got the 5GHz working on the T9UH. Using the Microsoft driver and following that Reddit guide seems like a solid fix for the random disconnects and driver issues.

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#3
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Re:TP-Link T9UH / AC1900 windows 11 5Ghz connection issues FIXED
a week ago

 

EmmaJohnson234 wrote

  @frustycusty Thanks for sharing! Glad you got the 5GHz working on the T9UH. Using the Microsoft driver and following that Reddit guide seems like a solid fix for the random disconnects and driver issues.

 

@EmmaJohnson234 

 

We're happy to hear that.

Nice to Meet You in Our TP-Link Community. Check Out the Latest Posts: Introducing AI QoS: Elevate Your Gaming Experience on the Archer GE800 Gaming Router! Connect TP-Link Archer BE550 to Germany's DS-Lite (Dual Stack Lite) Internet via WAN Archer GE550 - BE9300 Tri-Band Wi-Fi 7 Gaming Router Archer AX90 New Firmware Added Support for EasyMesh and Ethernet Backhaul If you found a post or response helpful, please click Helpful (arrow pointing upward icon). If you are the author of a topic, remember to mark a helpful reply as the "Recommended Solution" (star icon) so that others can benefit from it.
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#4
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Helpful: 2

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Replies: 3

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Windows 11 Network Connectivity
RTL8814u
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