How to Fix Can’t Save IP Settings Error on Windows 11

When you try to change your network settings — like setting a static IP address, DNS, or gateway — Windows 11 might throw a frustrating error: “Can’t save IP settings. Check one or more settings and try again.”

This issue can prevent you from connecting to the internet properly or from assigning custom network configurations. But don’t worry — it’s usually caused by misconfigured network adapters, permission issues, or leftover cached network data.

In this guide, we’ll walk you through how to fix the “Can’t Save IP Settings” error on Windows 11, step by step.

Why You’re Getting the “Can’t Save IP Settings” Error

This error can occur due to:

• Incorrect static IP configuration (invalid IP, subnet, or gateway).
• Disabled network adapter or missing driver.
• Corrupted TCP/IP stack or DNS cache.
• Outdated or conflicting network drivers.
• Permissions issues preventing Windows from applying network changes.

Let’s go through each fix in order — from simplest to most advanced.

Step 1: Restart Your PC and Router

Sometimes, the simplest fix works best.

1. Restart your computer.
2. Unplug your router or modem for 30 seconds, then plug it back in.
3. Wait for your network to fully reconnect.

Now, try changing your IP settings again under:
Settings → Network & Internet → Properties → Edit IP settings.

If you still see the error, move to the next step.

Step 2: Run the Network Troubleshooter

Windows includes a built-in troubleshooter that automatically detects and repairs common network configuration issues.

1. Press Windows + I to open Settings.
2. Go to System → Troubleshoot → Other troubleshooters.
3. Scroll down to Network Adapter → click Run.
4. Follow the on-screen instructions to detect and fix any issues.

Restart your PC and see if you can now save the IP settings.

Step 3: Use the Control Panel to Change IP Settings

Sometimes, the modern Settings app doesn’t apply changes properly. Try setting the IP manually through the classic Control Panel.

1. Press Windows + R, type: ncpa.cpl and press Enter.
2. Right-click your network adapter (e.g., Wi-Fi or Ethernet) → Properties.
3. Select Internet Protocol Version 4 (TCP/IPv4) → click Properties.
4. Choose Use the following IP address and Use the following DNS server addresses.
5. Enter your desired settings, for example:
   • IP address: 192.168.1.100
   • Subnet mask: 255.255.255.0
   • Default gateway: 192.168.1.1
   • DNS servers: 8.8.8.8 and 8.8.4.4
6. Click OK → Close.

Your new IP settings should save successfully without showing the error.

Step 4: Disable and Re-enable the Network Adapter

If the adapter is temporarily stuck, restarting it can reset the connection stack.

1. Press Windows + R, type: ncpa.cpl and press Enter.
2. Right-click your active adapter → Disable.
3. Wait 10 seconds, then right-click it again → Enable.

Try saving your IP settings again.

Step 5: Reset the TCP/IP Stack and Flush DNS

If your IP stack or DNS cache is corrupted, it can prevent Windows from applying new configurations.

1. Press Windows + S, type cmd, and click Run as administrator.
2. In the Command Prompt window, run these commands one by one: netsh int ip reset netsh winsock reset ipconfig /release ipconfig /flushdns ipconfig /renew
3. Restart your PC.

After rebooting, try editing the IP settings again. This step resets your entire network configuration to default.

Step 6: Ensure You’re Using Administrator Privileges

You need administrative rights to change network configurations.

1. Right-click the Start menu → select Windows Terminal (Admin).
2. If prompted by UAC (User Account Control), click Yes.
3. Use administrative commands (like in Step 5) or try changing IP settings again via the Control Panel.

Tip: If you’re using a work or school PC, your system administrator may have restricted these permissions — contact IT support in that case.

Step 7: Update or Reinstall Network Drivers

A corrupted or outdated network driver can prevent IP changes from saving correctly.

1. Press Windows + X → Device Manager.
2. Expand Network adapters.
3. Right-click your adapter → Update driver → Search automatically for drivers.

If no updates are found:

1. Right-click the same adapter → Uninstall device.
2. Restart your PC — Windows will automatically reinstall a fresh driver.

Alternatively, visit your manufacturer’s site (e.g., Intel, Realtek, or Killer Networking) and install the latest driver manually.

Step 8: Set IP Address Using Command Prompt

If the Settings app keeps failing, you can assign IP settings manually using commands.

1. Open Command Prompt (Admin).
2. Type the following (replace the values with your actual network info):
   netsh interface ip set address name="Wi-Fi" static 192.168.1.100 255.255.255.0 192.168.1.1
netsh interface ip set dns name="Wi-Fi" static 8.8.8.8
netsh interface ip add dns name="Wi-Fi" 8.8.4.4 index=2
3. Press Enter after each command.

Note: Replace "Wi-Fi" with "Ethernet" or your adapter’s name if applicable.

This method bypasses the graphical interface and directly applies your IP configuration.

Step 9: Disable IPv6 (Optional but Effective Fix)

Sometimes, IPv6 conflicts with IPv4 settings — especially when assigning static addresses.

1. Press Windows + R, type: ncpa.cpl and press Enter.
2. Right-click your active connection → Properties.
3. Uncheck Internet Protocol Version 6 (TCP/IPv6).
4. Click OK and restart your PC.

Now try saving your IPv4 settings again.

Step 10: Reset Network Settings (Full Network Reset)

If none of the above methods work, performing a full network reset will restore all adapters and configurations.

1. Press Windows + I → Network & Internet → Advanced network settings.
2. Under More settings, click Network reset.
3. Click Reset now → confirm.
4. Restart your PC when prompted.

After restart, reconfigure your IP settings — they should now save without issues.

Step 11: Check for Third-Party Firewall or VPN Conflicts

Some VPNs or security suites (like Norton, Kaspersky, or ExpressVPN) modify network settings and block changes.

• Temporarily disable your VPN or firewall.
• Try saving your IP settings again.
• If successful, whitelist your adapter or adjust firewall permissions to allow local IP configuration.

Step 12: Edit Registry (Advanced Fix)

If the network configuration entries in the registry are corrupted, you can reset them manually.

Warning: Editing the registry can be risky. Proceed carefully and back up the registry before making changes.

1. Press Windows + R, type: regedit and press Enter.
2. Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces
3. Expand the folders under Interfaces and look for your adapter (it’ll contain your current IP address in the details).
4. Right-click and delete any incorrect or duplicate IPAddress, SubnetMask, or DefaultGateway entries.
5. Close Registry Editor and restart your PC.

Now re-enter your IP settings through Control Panel or Command Prompt.

Wrapping Up

When you encounter the “Can’t Save IP Settings” error on Windows 11, it usually means Windows can’t apply changes due to driver, permission, or configuration conflicts.

Once fixed, you should be able to save and apply your IP settings without seeing that frustrating error message again — and your internet connection will work as expected.