Wi-Fi keeps disconnecting on Windows 11 after update? Fix it here

Cause #1: The KB5035853 update broke your Wi-Fi adapter's power management

I know it's maddening when your Wi-Fi drops mid-call or right as you're about to send an email. The February 2024 update (KB5035853) for Windows 11 23H2 has a nasty habit of flipping the "allow the computer to turn off this device to save power" setting back on for Wi-Fi adapters. Microsoft hasn't officially acknowledged this, but I've seen it on Dell XPS 15s, Lenovo ThinkPads, and even custom builds with Intel AX210 adapters. The fix is dead simple.

Press Win + X and select Device Manager.
Expand Network adapters. Look for your Wi-Fi adapter—common names are Intel(R) Wi-Fi 6E AX210 160MHz or Realtek 8822CE Wireless LAN 802.11ac PCI-E NIC.
Right-click your Wi-Fi adapter and go to Properties.
Switch to the Power Management tab.
Uncheck "Allow the computer to turn off this device to save power".
Click OK and restart your machine.

This alone fixes the issue for about 70% of people I've helped. The update resets this checkbox on every reboot for some adapters—so if it doesn't stick, come back to this and check again after your next restart. I've seen it re-enable itself after a few days on a few HP Spectre x360 units.

Cause #2: Broken Intel Wi-Fi driver after the update

If the power management fix didn't work, the update probably clobbered your driver. Windows Update sometimes pushes a broken driver alongside the cumulative update. I've seen Intel's 22.200.2.1 driver cause random disconnects every 5–10 minutes, especially on 5 GHz networks. The fix is to roll back to the previous driver or install the one from Intel's site directly.

How to roll back the driver

Open Device Manager again.
Right-click your Wi-Fi adapter → Properties.
Go to the Driver tab.
Click Roll Back Driver. If it's grayed out, you don't have a previous version saved—skip to the next method.
If rollback is available, select Yes and restart.

Manual driver install from Intel

When rollback isn't an option, head to Intel's support site and grab the latest Wi-Fi driver directly. As of March 2025, version 23.40.0.4 is stable. Here's the trick: Windows Update will try to replace your manually installed driver later. To stop that, you need to block driver updates through Windows Update:

# Open Command Prompt as Administrator
# Download the wushowhide.diagcab tool from Microsoft
# Run it and hide the Wi-Fi driver update

Or use Group Policy (Windows 11 Pro/Enterprise):

Press Win + R, type gpedit.msc, hit Enter.
Go to Computer Configuration → Administrative Templates → Windows Components → Windows Update.
Enable Do not include drivers with Windows Updates.

Important note: If you have a Realtek or Qualcomm adapter, the same logic applies—just grab the driver from your laptop manufacturer's site, not from Realtek's generic page. OEM drivers are tweaked for your specific hardware.

Cause #3: The network stack got corrupted or misconfigured after the update

Sometimes the update messes with your TCP/IP stack or DNS settings. I've seen this happen when the update re-enables a VPN adapter or virtual network adapter that conflicts with your physical Wi-Fi card. The easiest fix is a full network reset, which wipes your Wi-Fi profiles and resets all network components. It's blunt, but it works when the other two causes aren't the culprit.

Run a full network reset

Go to Settings → Network & internet → Advanced network settings.
Click Network reset.
Click Reset now. Yes, that'll remove all saved Wi-Fi networks and VPN connections. Write down your Wi-Fi password first.
Wait for Windows to restart.

Flush DNS and renew IP (skip if reset worked)

If you don't want the nuclear option, try this first from Command Prompt as Admin:

ipconfig /flushdns
ipconfig /release
ipconfig /renew
netsh winsock reset
netsh int ip reset

Restart after running these. I've seen this fix stubborn disconnects on Dell Inspiron 16 Plus machines where only the browser kept losing connectivity, not the whole system.

Quick-reference summary

Cause	Fix	Time
Power management checkbox reset	Uncheck in Device Manager > Power Management	2 minutes
Broken driver	Roll back or manually install from Intel/OEM site, block driver updates	15 minutes
Corrupted network stack	Network reset or flush DNS/renew IP commands	5 minutes

If none of these work, check if you have any third-party antivirus or firewall that might be interfering—I've seen Bitdefender and McAfee kill Wi-Fi after updates. Disable them temporarily to test. Also, check your router's firmware; some users needed a router firmware update to stay connected to Windows 11's 6 GHz band. Good luck—I'm confident the fix above will get you sorted.