Stop your PC from sleep-glitching your network

Steps

1. 01
   • Device Manager → Network adapters → right-click your Wi-Fi or Ethernet adapter → Properties → Power Management tab
2. 02
   • Untick 'Allow the computer to turn off this device to save power' — this is the setting most responsible for a connection that's dead until you reconnect manually after wake
3. 03
   • On the same adapter's Advanced tab, set 'Green Ethernet' and 'Energy Efficient Ethernet' to Disabled if present — these throttle link speed to save power and can cause the same symptom
4. 04
   • For Wi-Fi specifically, also check Settings → Network & internet → Wi-Fi → Hardware properties confirms the adapter itself is enabled, since some laptops disable the radio as a separate sleep step
5. 05
   • Repeat for any secondary adapter — a USB Wi-Fi dongle or Bluetooth tethered connection — each has its own Power Management tab