Medium
Operating Systems
✓ Solution Verified by Community (0+ upvotes)
How to fix error error-network-unreachable in Windows 11
ERROR_NETWORK_UNREACHABLE = 1231
Fix based on community reports and expert analysis. Last verified: 2026-08-12
· How we verify fixes
| Error Code | error-network-unreachable |
|---|---|
| Affected System | Windows 11 (Microsoft) |
| Difficulty | Medium |
| Estimated Time | 30 min |
| Requires Admin Rights | ⚠️ Yes |
| Requires Reboot | 🔄 Yes |
Solution Steps
- 1 First, check physical connections: ensure Ethernet cable is plugged in securely, or Wi-Fi is turned on. Look for the network icon in the system tray. If it shows a red X or globe, you have no connection.
- 2 Press Windows key + I to open Settings. Go to Network & internet → Wi-Fi (or Ethernet). Toggle Wi-Fi off and on again. For Ethernet, try unplugging and replugging the cable. This refreshes the connection.
- 3 Press Windows key + R, type 'cmd', and press Ctrl+Shift+Enter to open Command Prompt as administrator. Type 'ipconfig /release' and press Enter, then 'ipconfig /renew' and press Enter. This forces your computer to obtain a new IP address from the router, which can fix IP conflicts.
- 4 If that doesn't work, type 'ipconfig /flushdns' and 'netsh int ip reset' and press Enter after each. This resets the IP configuration and DNS cache. Restart your computer afterward.
- 5 If you still have no network, restart your router and modem. Unplug them for 30 seconds, then plug them back in. Wait for all lights to stabilize. This often resolves temporary ISP issues.
- 6 If the problem persists, update your network adapter driver. Press Windows key + X and select Device Manager. Expand 'Network adapters', right-click your adapter, and select 'Update driver'. Choose 'Search automatically for drivers'.
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