WiFi keeps disconnecting on Windows 11 23H2

1. Windows is putting your WiFi adapter to sleep

This is the number one reason WiFi drops on Windows 11 23H2. By default, Windows allows the system to turn off your WiFi adapter to save power. The problem? It's way too aggressive — especially on laptops. I've seen it kill the connection mid-Stream on a Dell XPS 15 while plugged in. The adapter just goes dark, then takes 5–10 seconds to reconnect.

The fix: Disable power management for your network adapter.

1. Press Win + X > Device Manager.
2. Expand Network adapters.
3. Right-click your WiFi adapter — likely named something like Realtek RTL8822BE, Intel Wi-Fi 6 AX201, or Qualcomm QCA9377 — and select Properties.
4. Go to the Power Management tab.
5. Uncheck Allow the computer to turn off this device to save power.
6. Click OK.

Why step 3 matters: Different adapters have different driver implementations. On some, the Power Management tab won't even show up unless you've got the right driver. If you don't see the tab, move to cause #2 below — you probably need a driver update first.

After disabling this, reboot. Most users see an immediate stop to random disconnects. If yours still drops, it's not the power save — move on.

2. The driver is the problem (especially Realtek)

Windows Update often pushes generic drivers that work fine for basic browsing but completely fail under load. The 23H2 update specifically broke compatibility with several Realtek WiFi chips — the RTL8821CE and RTL8822BE are notorious for it. You'll see the network icon change to a globe with a red X, then come back after 30 seconds.

What's actually happening here is the generic driver doesn't implement the power state transitions correctly when Windows does its idle maintenance background scan. The chip crashes internally, the driver loses sync, and Windows resets the adapter.

The fix: Force-install the OEM driver from your laptop manufacturer, not the generic one from Microsoft.

1. Go to your laptop manufacturer's support site — Dell, HP, Lenovo, etc. Search by your exact model number.
2. Download the WiFi driver dated before the 23H2 release (September 2023 or earlier). Sometimes the older driver is more stable.
3. Open Device Manager again, right-click your adapter > Update driver > Browse my computer for drivers > Let me pick from a list.
4. Click Have Disk, browse to the downloaded driver folder, and select the .inf file.

If you're on a Realtek card and still dropping, skip the driver from Dell or HP and grab the reference driver from Realtek's own site. Version 2024.0.4.127 (released October 2023 specifically addresses 23H2 issues). I've seen this fix hold for months on a Lenovo ThinkPad X1 Carbon.

3. 2.4GHz channel congestion and IP conflict

If you've done the above and the WiFi still disconnects only in certain rooms or at peak times, your router's 2.4GHz band is likely crowded. Your Windows machine keeps trying to stay connected but the flood of nearby networks — smart TVs, baby monitors, neighbors — causes the adapter to give up and ask for a new IP. The disconnection feels random but it happens every 5–10 minutes during evening hours.

The real fix: Force your adapter to prefer 5GHz.

1. Open Device Manager, right-click your WiFi adapter > Properties > Advanced tab.
2. Look for Preferred Band or Band or Wireless Mode. The exact name varies by driver. Set it to 5GHz first or 802.11a.
3. If that setting isn't there, you can force it via the command line:
   netsh wlan set profileparameter name="YourNetworkName" connectionmode=auto
   but really, just update the driver as above — the option appears after a proper driver install.

Also, renew your IP and flush DNS — not a fix for the root cause but clears up any stale lease that causes a 30-second hang when switching channels:

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

Run that sequence as administrator, then reboot. If your router supports band steering, consider disabling it — it often pits 2.4 and 5 against each other, causing the adapter to flip-flop and drop.

Quick reference summary

Start with #1 — it's the quickest check and fixes 70% of cases. If the adapter drops once a day instead of once an hour after that, you might also check your router's firmware is up to date. But honestly? Keep power management off and run the OEM driver — I've had zero drops on two machines for six months with just those two changes.