Use the disconnect pattern as evidence
| What you see | Start here |
|---|---|
| Stable near the router, unstable farther away | Treat signal/coverage as the first suspect. |
| Drops on one Wi-Fi network only | Focus on that router, mesh node or saved network profile. |
| Drops on every network, including a hotspot | Focus on Windows, the adapter driver or hardware. |
| Drops mainly after sleep/idle | Check adapter power behaviour and driver history. |
1. Separate signal trouble from a Windows fault
Move closer to the router and test for several minutes. Then test a second trusted network such as a phone hotspot. Stable hotspot service points toward the original router; drops on both networks point back toward Windows or the wireless adapter.
Do not change router channel, security mode, band and Windows settings all at once. One change at a time preserves the evidence.
2. Generate a Windows wireless report
Open Terminal as administrator and run netsh wlan show wlanreport. Open the report path Windows shows and review recent sessions, adapter details and disconnect reasons.
The report is useful evidence; it does not reveal saved Wi-Fi passwords.
3. Rebuild only the affected Wi-Fi profile
Open Settings → Network & internet → Wi-Fi → Manage known networks, forget only the affected network and reconnect.
On a work/school network, confirm credentials or certificate requirements before deleting the profile.
4. Check power behaviour and the supported driver
If disconnects happen after idle or sleep, inspect the wireless adapter in Device Manager. Some drivers expose a Power Management option that allows Windows to turn the device off to save power; not every driver shows it.
Install normal Windows updates first. For adapter drivers, prefer the PC/adapter manufacturer. If the problem began immediately after a driver update and Roll Back Driver is available, that is a more targeted test than installing random packages.
5. Keep network reset as the last Windows-side step
Restart the router once if you manage it and install vendor-supported firmware where appropriate. If Windows remains the likely cause, Settings → Network & internet → Advanced network settings → Network reset can rebuild adapters and settings.
Network reset can disturb VPN clients, virtual adapters and custom network configuration, so use it after simpler evidence-based checks rather than first.
Do not chase a Windows fix when only one location has poor signal
If the connection becomes stable close to the router or other devices also drop in the same place, improve coverage/router placement before repeatedly reinstalling the PC adapter.
Verify the repair
- Wi-Fi stays connected through normal use.
- Sleep/wake no longer causes repeated drops.
- The same network remains stable after restart.
- A second network behaves consistently with the diagnosis.
Frequently asked questions
Why does Wi-Fi disconnect after Windows wakes from sleep?
Adapter power behaviour or a driver problem can show up after sleep. Compare the timing, then check the supported driver and power options exposed by that adapter.
Should I use Network reset first?
No. Microsoft treats network reset as a later step because it removes and reinstalls network adapters and resets their settings.
Does 5 GHz disconnect more easily than 2.4 GHz?
Higher-frequency bands can provide more speed but usually have less range through walls. A close-range test helps separate coverage from a Windows fault.
Related fixes
Sources and review notes
Reviewed against Microsoft Support: Fix Wi-Fi connection issues in Windows. ITFixLab adds a signal-vs-Windows comparison and keeps Network reset late because it rebuilds adapter settings.