Surface Pro 11 cannot connect to 6 GHz Wi‑Fi after Windows updates

JINGWEI WU 0 Reputation points
2026-08-11T11:01:08.5833333+00:00

I haven’t used my Surface Pro 11 for a few weeks (less than two months). When I turned it on this morning, Windows installed a large number of updates. After the updates completed, my Surface Pro 11 can no longer connect to my 6 GHz Wi‑Fi network — it only connects to the 5 GHz and 2.4 GHz bands.

The 6 GHz SSID is still visible, and I can enter the correct password, but the connection fails with the message “Can’t connect to this network.” My iPhone and Dell laptop both connect to the same 6 GHz network without any issues, so the router and 6 GHz band are functioning normally.

Device & Network Details

  • Device: Surface Pro 11

Wi‑Fi chipset: Qualcomm FastConnect 7800

Router: TP‑Link BE15000 (Wi‑Fi 7 tri‑band)

Windows: Latest updates installed today

Issue started: Immediately after Windows + Surface updates

Troubleshooting already attempted

Restarted Surface Pro 11

Restarted router

Forgot and re‑added the 6 GHz SSID

Checked router settings (6 GHz still enabled, WPA3‑Personal, no MAC filtering)

Verified other devices can connect to 6 GHz

Searched online — appears to be a known issue affecting FastConnect 7800 after recent updates

The only step I haven’t tried is rolling back the Wi‑Fi driver to an earlier version, which I would prefer to avoid if possible.

Question

Is there any fix or workaround available for restoring 6 GHz Wi‑Fi connectivity on the Surface Pro 11 after the latest updates?

Thank you.I haven’t used my Surface Pro 11 for a few weeks (less than two months). When I turned it on this morning, Windows installed a large number of updates. After the updates completed, my Surface Pro 11 can no longer connect to my 6 GHz Wi‑Fi network — it only connects to the 5 GHz and 2.4 GHz bands.

The 6 GHz SSID is still visible, and I can enter the correct password, but the connection fails with the message “Can’t connect to this network.” My iPhone and Dell laptop both connect to the same 6 GHz network without any issues, so the router and 6 GHz band are functioning normally.

Device & Network Details

Device: Surface Pro 11

Wi‑Fi chipset: Qualcomm FastConnect 7800

Router: TP‑Link BE15000 (Wi‑Fi 7 tri‑band)

Windows: Latest updates installed today

Issue started: Immediately after Windows + Surface updates

Troubleshooting already attempted

Restarted Surface Pro 11

Restarted router

Forgot and re‑added the 6 GHz SSID

Checked router settings (6 GHz still enabled, WPA3‑Personal, no MAC filtering)

Verified other devices can connect to 6 GHz

Searched online — appears to be a known issue affecting FastConnect 7800 after recent updates

The only step I haven’t tried is rolling back the Wi‑Fi driver to an earlier version, which I would prefer to avoid if possible.

Question

Is there any fix or workaround available for restoring 6 GHz Wi‑Fi connectivity on the Surface Pro 11 after the latest updates?

User's image

Thank you.

Surface | Surface Pro | Network
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  1. Hendrix-V 18,605 Reputation points Microsoft External Staff Moderator
    2026-08-12T04:00:57.5466667+00:00

    Hi JINGWEI WU,

    Since the 6 GHz SSID is still visible on your Surface Pro 11 and other devices can connect successfully, the issue may be related to how the current wireless adapter configuration is interacting with the recent update rather than a problem with the router itself.

    As an additional check, try disabling and re-enabling the Qualcomm FastConnect 7800 adapter:

    • Open Device Manager, expand Network adapters.
    • Right-click Qualcomm FastConnect 7800 and select Disable device.
    • Wait 30 seconds, then Enable device again.
    • Restart the Surface and test the 6 GHz network.

    You can also check Settings > Windows Update > Advanced options > Optional updates for any newer Surface or Qualcomm wireless driver that may not have installed automatically.

    If the issue continues, collecting a wireless report may help identify whether the connection is failing during authentication or association - run this command in Command Prompt (Admin): netsh wlan show wlanreport

    This generates a report in C:\ProgramData\Microsoft\Windows\WlanReport that can provide more insight into the connection failure.

    I hope this helps point you in the right direction. Let me know if you need further assistance, feel free to ask me by clicking "Add Comment" or "Add Answer" if you cannot add comment so your response will be visible. Thanks for your effort.

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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  2. JINGWEI WU 0 Reputation points
    2026-08-11T12:09:06.46+00:00

    Thanks for the quick response. I’ve already gone through all of those troubleshooting steps before. But to respect your answer, I followed the instructions and repeated every step exactly as suggested. Unfortunately, the result is still the same — no luck connecting to the 6 GHz network.

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