How to Fix WiFi Not Working on Windows 11 After an Update: Driver Rollback, Network Reset, and TCP/IP Stack Repair Fixes

A Windows 11 cumulative update can silently break your WiFi connection in several ways: it may swap a working vendor-specific driver for a generic Microsoft one, corrupt the Winsock catalog, or reset adapter power-management settings that cause the radio to shut off unexpectedly. The result is a laptop that shows a WiFi icon but can’t connect — or one where the WiFi adapter disappears entirely from the network tray. Work through the steps below in order. Each one is reversible and takes under five minutes. Run a speed test after each fix to confirm the connection is restored before moving to the next step.

Why Windows 11 Updates Break WiFi

Cumulative updates bundle driver packages for a wide range of hardware. When Windows installs a generic WiFi driver on top of a working Intel, Realtek, or Qualcomm vendor driver, the adapter may initialize but fail to scan for networks or negotiate a connection. A separate failure mode occurs when the TCP/IP stack registry keys — which control IP addressing, routing, and packet handling — are partially overwritten during the update process, leaving the adapter visible but unable to obtain an IP address or resolve DNS. A third common culprit is the Winsock catalog, the interface layer between network applications and the TCP/IP stack: corruption here causes apps to report no internet even when the adapter shows a valid IP assignment.

Step 1: Roll Back or Update Your WiFi Driver

Driver replacement is the most common cause of post-update WiFi failures. Rolling back the driver reverses the change in seconds.

1. Right-click the Start button and select Device Manager.
2. Expand Network adapters and find your WiFi adapter (typically named “Intel Wi-Fi”, “Realtek RTL”, or “Qualcomm QCNFA”).
3. Right-click it and choose Properties, then open the Driver tab.
4. Click Roll Back Driver. Windows restores the previous driver and prompts a reboot.

If the Roll Back Driver button is greyed out, Windows has no stored previous driver. In that case, go to your laptop manufacturer’s support site — Dell, HP, Lenovo, ASUS, or Microsoft for Surface — search by your exact model number, and download the latest WiFi driver package directly. Run the installer and reboot. Manufacturer drivers are consistently more stable for their specific hardware than the generic versions pushed through Windows Update.

After the driver is restored, confirm the adapter no longer shows a yellow warning triangle in Device Manager. If it still displays an error code such as Code 43 or Code 10, a full network reset (Step 5) typically resolves those hardware registration failures.

Step 2: Disable and Re-Enable the WiFi Adapter

A quick adapter toggle forces Windows to reinitialize the radio hardware without requiring a reboot. In Device Manager, right-click your WiFi adapter, choose Disable device, wait ten seconds, then right-click again and choose Enable device. The taskbar network icon disappears briefly and then reappears. Check whether your available networks list now shows your router’s SSID — this fix resolves cases where an update left the adapter partially initialized at the driver level.

Step 3: Fix WiFi Adapter Power Management

Windows 11 updates can silently re-enable a power-saving setting that instructs Windows to cut power to the WiFi adapter during low-activity periods. This causes WiFi to drop intermittently or fail to reconnect after the screen wakes from sleep.

1. In Device Manager, right-click your WiFi adapter and select Properties.
2. Open the Power Management tab.
3. Uncheck Allow the computer to turn off this device to save power and click OK.

Also check Settings → System → Power & sleep and confirm the power mode is set to Balanced or Best performance. Some OEM systems aggressively throttle wireless radios in Power saver mode, and a Windows update can reset this setting without notification.

Step 4: Reset the Winsock Catalog and TCP/IP Stack

If the adapter is visible and enabled but your device still shows “No Internet” or fails to obtain an IP address, the TCP/IP stack or Winsock catalog was likely corrupted during the update. The following commands reset both to factory defaults. Open an elevated Command Prompt by pressing Win + S, typing cmd, right-clicking Command Prompt, and selecting Run as administrator. Then run these commands in order:

1. netsh winsock reset
2. netsh int ip reset
3. ipconfig /flushdns
4. ipconfig /release
5. ipconfig /renew

Reboot after all five commands complete. The winsock reset clears corrupted catalog entries that prevent apps from connecting even when the adapter shows a valid IP. The int ip reset rewrites the TCP/IP registry keys to defaults. Together they resolve the majority of “connected but no internet” failures caused by update corruption. After rebooting, run a speed test to confirm both connectivity and speed are restored.

Step 5: Run the Windows Network Troubleshooter

If manual fixes have not resolved the issue, Windows’ built-in diagnostics can surface misconfigured proxy settings or missing adapter registrations that are harder to spot manually. Open Settings → System → Troubleshoot → Other troubleshooters and click Run next to Internet Connections. On Windows 11 24H2 and later, the troubleshooter runs an expanded set of checks including DNS resolution, gateway reachability, and adapter binding order. Apply any fixes it recommends and reboot before retesting.

Step 6: Perform a Full Network Reset

A Network Reset is the most thorough option short of reinstalling Windows. It uninstalls all network adapters and their settings, then reinstalls them from scratch on the next boot — resolving cases where a partial update left adapter registrations or binding configurations in an inconsistent state.

1. Open Settings → Network & internet → Advanced network settings.
2. Scroll to Network reset and click Reset now.
3. Windows reboots automatically within five minutes.

Important: Network Reset removes all saved WiFi passwords. You will need to reconnect to each network and re-enter its password after the reboot. Domain-joined machines and custom VPN adapter configurations are also removed and must be reconfigured. For most home users this is a minor inconvenience, and Network Reset resolves WiFi failures in the vast majority of cases where all other fixes have failed.

Step 7: Prevent the Update From Breaking WiFi Again

Once WiFi is working, note the exact driver version and date shown in Device Manager under your adapter’s Driver tab. If a future update replaces it, you know what to roll back to. To stop Windows Update from overwriting a manually installed driver, open gpedit.msc, navigate to Computer Configuration → Administrative Templates → Windows Components → Windows Update, and enable Do not include drivers with Windows Updates. This prevents cumulative updates from touching adapter drivers while still delivering security patches and OS fixes.

For ongoing WiFi performance monitoring after any driver or stack change, our guide on how to run a full home network speed audit walks through testing every device and connection point to confirm your real-world speeds match what your ISP plan promises.

Quick Reference: Fix by Symptom

• WiFi adapter missing from taskbar: Device Manager → roll back or reinstall driver.
• WiFi icon shows but no networks appear: Disable and re-enable adapter in Device Manager; check power management setting.
• Connected to router but “No Internet”: Run netsh winsock reset and netsh int ip reset as Administrator, then reboot.
• WiFi drops after sleep or screen-off: Uncheck “Allow the computer to turn off this device to save power” in adapter Power Management.
• All of the above tried, still broken: Settings → Network reset → Reset now. Re-enter WiFi passwords after reboot.