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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteIf Windows 11 loses internet after waking from sleep, first check whether Wi-Fi actually disconnected, Windows reports “No internet,” or only one app or website is failing. Then test another device on the same network. These checks help distinguish a problem with the PC from one affecting the shared Wi-Fi connection before you change adapter settings or reset networking.
What failed: Wi-Fi, internet access, or one app?
After waking the PC, check the network icon in the taskbar. Is Wi-Fi off or disconnected? Does Windows show the expected network as connected but without internet? Or does the connection look normal while a particular app or site fails? A connected Wi-Fi status does not prove that every app or site is reachable; the issue may be limited to that service or a firewall. See Microsoft’s Wi-Fi connection troubleshooting guidance.
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Make sure Wi-Fi is on and Airplane mode is off. Windows 11’s network and Airplane mode controls are covered in Microsoft’s network settings overview. Then run the Network and Internet troubleshooter in the Get Help app, which Microsoft recommends as an initial automated check.
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Is it this PC or the Wi-Fi network?
Check another device on the same Wi-Fi
Try a phone or another computer on the same network. If that device also has no internet, the problem may be with the router, modem, or service rather than the sleeping PC. Microsoft’s general Wi-Fi steps suggest restarting the modem and router: unplug both, wait about 30 seconds, reconnect power, and wait for them to come fully online. This briefly disconnects everyone using the network.
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If only the Windows PC is affected
On the PC, disconnect and reconnect to the saved Wi-Fi network. If you see separate 2.4 GHz and 5 GHz network names, try connecting to the other band. These are general troubleshooting steps, not proof that the saved network or a particular band caused the wake-related failure.
Use Ethernet to narrow a Wi-Fi problem
If the symptoms point specifically to Wi-Fi or the router, test the PC over Ethernet if possible. Microsoft says that internet access through a direct Ethernet connection to the modem, when Wi-Fi is failing, implicates the Wi-Fi router; check its firmware and documentation. This is a diagnostic clue, not a reason by itself to replace the router. A cable helps only if the PC has an Ethernet port or a compatible adapter. See Microsoft’s Ethernet troubleshooting guidance.
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Wi-Fi disconnects after sleep: check adapter power and drivers
If the failure repeatedly follows sleep and appears limited to this PC’s wireless adapter, check its power-management setting. Open Device Manager, expand Network adapters, right-click the Wi-Fi adapter, and select Properties. On the Power Management tab, clear “Allow the computer to turn off this device to save power,” if that option is present. Microsoft includes this among its troubleshooting steps for frequent Wi-Fi disconnections; it is a possible fix, not confirmation of the cause.
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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallAlso check for a current driver from the PC manufacturer. Microsoft advises downloading the correct driver before uninstalling an adapter driver, particularly if the problem began after an update. If the PC cannot get online, save the installer on another computer and transfer it on a USB drive. If you uninstall the adapter in Device Manager and restart, Windows may reinstall it automatically; if it does not, install the saved manufacturer driver. Microsoft’s Wi-Fi guidance covers driver reinstall steps, and its sleep and wake guidance recommends checking that device drivers are current when devices do not work correctly after waking.
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There is no single universally established Windows 11 fix for every post-sleep connection loss. For a persistent problem, check the PC maker’s driver page and any adapter-specific release notes for your exact model and Windows build; the general guidance does not identify one chipset, update, or power state as the cause in every case.
Try network commands only after simpler checks
If reconnecting and the adapter checks do not help, Microsoft provides the following administrator command sequence to reset Winsock and TCP/IP, renew the IP address, and clear the DNS resolver cache. Run the commands in order, then test the connection:
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- Open Command Prompt as an administrator.
- Enter each command, pressing Enter after each one:
netsh winsock reset netsh int ip reset ipconfig /release ipconfig /renew ipconfig /flushdns - Check whether internet access returns. Microsoft’s Wi-Fi troubleshooting article lists this sequence.
Keep Network reset as the last resort
Use Network reset only after the narrower checks and fixes. In Windows 11, go to Settings > Network & internet > Advanced network settings > Network reset. Reset removes installed network adapters and their settings; after the PC restarts, Windows reinstalls the adapters with default settings. You may need to reinstall or configure VPN software and Hyper-V virtual switches again. A reset may also change known networks to a public profile, affecting discoverability on a local network. Microsoft describes these effects in its Wi-Fi troubleshooting guidance.
If other devices fail after every wake
If connected devices besides Wi-Fi also behave incorrectly after the PC wakes, disconnect and reconnect them or restart the computer, then check for current drivers. Microsoft includes these as general steps for devices that do not work properly after waking in its sleep and wake guidance.
Quick Recap
Best Value
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