WiFi keeps dropping on Windows 11 after 2024H2 update

If your WiFi disconnects randomly after updating to Windows 11 2024H2 (build 26100), you're not alone. This update changed how Windows handles network adapters during idle periods. What's actually happening here is that Windows is aggressively cutting power to the WiFi card even when you're actively using the browser — it misidentifies low-traffic moments as idle.

The fix isn't complicated, but you need to hit the right setting. Let me walk you through the three most common causes, starting with the one that fixes it 80% of the time.

1. Power management is killing your adapter

Windows 11 2024H2 enables "Allow the computer to turn off this device to save power" by default on all network adapters. This is the #1 culprit. The adapter enters a low-power state after 30-60 seconds of no traffic, but Windows doesn't always wake it properly — especially on Intel AX211 and Realtek 8852BE cards.

Here's how to turn it off:

1. Open Device Manager (right-click Start → Device Manager)
2. Expand Network adapters
3. Right-click your WiFi adapter (look for "Intel", "Realtek", or "MediaTek")
4. Select Properties → Power Management tab
5. Uncheck Allow the computer to turn off this device to save power
6. Click OK

That's it. No reboot required in most cases. The reason this works is that the checkbox overrides the WLAN power policy that 2024H2 forces. If you have multiple adapters (some laptops have both Intel and MediaTek), do this for each one — Windows might be toggling the secondary adapter instead of your main one.

Real-world scenario: You're on a Zoom call. After 2 minutes of silence (you're muted, screen sharing), the WiFi drops. You reconnect, but the call lags. This is power management killing the link when the OS thinks you're idle. Turning it off prevents the drop entirely.

2. The WLAN AutoConfig service is restarting too aggressively

Windows 11 2024H2 has a known bug where the WLAN AutoConfig service restarts itself under low memory pressure. This isn't a memory leak — it's the service's recovery settings being too aggressive. When the service restarts, all WiFi connections drop for 3-6 seconds.

To check if this is your problem:

1. Open Event Viewer (type eventvwr in Start)
2. Go to Windows Logs → System
3. Filter for WLAN-AutoConfig source

If you see Event ID 10000 or 10001, the service restarted. The fix:

1. Open Services (type services.msc in Run)
2. Find WLAN AutoConfig
3. Right-click → Properties → Recovery tab
4. Change all three First failure, Second failure, Subsequent failures to Take No Action
5. Set Reset fail count after to 99999 days
6. Click Apply, then restart the service from the same tab

What's happening here is that Windows tries to "fix" the service by restarting it on failure, but the failure count never resets because the time window is too short. Setting those values prevents automatic restarts. This is safe — the service only crashes if something else is broken, and you'd want a manual reboot in that case anyway.

3. The Intel or Realtek driver doesn't support Windows 11 2024H2's power mode

2024H2 introduced a new Modern Standby power mode that doesn't play well with older driver versions. Intel driver 22.220.0.0 and Realtek driver 6001.10.328.0 are known offenders. They don't handle the new idle state transitions — the adapter stays in a half-connected state after resuming from standby.

To fix this:

1. Open Device Manager
2. Right-click your WiFi adapter → Update driver
3. Select Browse my computer for drivers
4. Let me pick from a list of available drivers on my computer
5. Look for a version from 2024 or later. If none exists, download the latest from the manufacturer's site directly (not Windows Update — it's often outdated).

For Intel, the real fix is driver version 23.10.0.1 or newer. For Realtek, you want version 6001.11.339.0 or newer. The reason step 3 works is that Windows Update lags 2-4 months behind manufacturer releases, and 2024H2 changed the power-state machine — only newer drivers know how to handle it.

One caveat: If you have a Dell or HP laptop, check their support site first. OEMs sometimes customize drivers to work with their BIOS. Running a generic Intel driver on a Dell can cause worse drops.

Quick-reference summary

Start with fix #1. If that doesn't solve it, check your event logs. Only go to driver updates if the other two didn't help — I've seen driver updates introduce new issues on some hardware combos. The power management fix is the one that's consistent across every WiFi chipset I've tested on 2024H2.