Windows 11 troubleshooting
Restore Networking After WinUtil Changes
Separate DNS, proxy, adapter, and firewall symptoms before applying a network repair.
Quick answer
Connection failure after a tweak is not proof the tweak caused it. Compare network, DNS and proxy results before changing configuration.
Step-by-step checklist
Identify the scope
Check whether other devices work on the same network and whether the Windows PC fails on Wi-Fi, Ethernet, or both.
Inspect configuration
Review Settings → Network & internet, VPN, proxy, and DNS configuration; record custom settings before resetting anything.
Try lowest-risk steps first
Restart the affected adapter and router when appropriate, review Windows troubleshooters, and undo only a recent tweak with a clear causal link.
Validate connectivity
Test local gateway, a trusted HTTPS site, and name resolution separately; note which layer still fails.
How to verify success
Repeat the original task under the same conditions, record the Windows build and exact error or result, and confirm Windows Update, security protection and core applications still behave as expected. If the result is worse, undo the last documented change rather than applying multiple unrelated fixes.
When to stop and ask for help
Stop when encryption recovery keys are unavailable, a work device is managed, an update contains an unfamiliar error code, or boot and recovery tools are affected. Use trusted project documentation and Microsoft support guidance for the specific build and message.
Reference points
See the WinUtil project repository and Microsoft Windows documentation for current commands and feature limitations. This checklist does not claim an independently verified fix for every system configuration.