Why Your Wi-Fi Keeps Disconnecting on Windows 11

What usually causes the drops

A disconnect is simply Windows or the router ending the session, and in practice the cause list is short. The single most common one is power management: to stretch battery life, Windows puts the Wi-Fi adapter to sleep and wakes it a moment later — most networks cope, but some routers and access points treat that sleep as a dropped client. The pattern tells you the most: drops after idle point at power saving, drops during activity point at the driver or the signal, and drops happening on every device at once point at the router.

• Adapter power saving — the classic culprit; drops after idle or during sleep
• Driver trouble — after a Windows update, or on a fresh install running a generic driver
• Weak signal or congested channel — drops grow with distance from the router
• Band steering — routers shuffling you between 2.4 and 5 GHz can kill VPN and call sessions
• WLAN AutoConfig stopped — the Windows service behind every Wi-Fi connection; if it is not running, connections die constantly

The one-minute fixes to try first

Open Device Manager (right-click Start → Device Manager → Network adapters), double-click your Wi-Fi adapter, open the Power Management tab and uncheck Allow the computer to turn off this device to save power, then click OK and reboot. Next, make Windows relearn the network: Settings → Network & internet → Wi-Fi → Manage known networks → Forget next to your SSID, then reconnect with the password — this rebuilds the saved profile, which alone fixes profiles corrupted by a driver or router update.

Also check the service behind every connection: press Win+R, type services.msc, find WLAN AutoConfig and confirm it is Running with the Automatic startup type. And do not skip the router test: if your phone or another laptop disconnects at the same moments, the problem is upstream of Windows — reboot the router and check that its firmware is current before blaming the PC.

Deeper repairs: drivers, network reset and the WLAN report

For the driver, stay specific: in Device Manager, right-click the adapter → Update driver, but prefer the manufacturer's package — Intel Wi-Fi, Realtek and MediaTek each ship their own — over anything a generic driver-updater utility guesses at. If the drops began right after an update, roll back instead: adapter Properties → Driver tab → Roll Back Driver. To see exactly what happened during a drop, open an elevated Windows Terminal and run netsh wlan show wlanreport — Windows writes an HTML report to C:\ProgramData\Microsoft\Windows\WlanReport\wlan-report-latest.html listing every disconnect with a reason code.

The nuclear option is a full network reset: Settings → Network & internet → Advanced network settings → Network reset → Reset now. It reinstalls every network adapter, forgets all saved Wi-Fi networks and reboots the PC after about five minutes — use it when the simple fixes fail, and expect to re-enter your Wi-Fi passwords and VPN settings afterwards. Combined with a current driver from the adapter maker, this resolves practically every software-side cause; what remains is hardware — a tired router, interference or a weak signal worth fixing with mesh or wired backhaul.

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