Windows Update Error 0x8024402C — Server Not Found Fix

What Does This Error Mean?

The 0x8024402C error means Windows Update cannot connect to Microsoft's update servers. This is a network connectivity problem, not a Windows damage problem. Your computer can reach most websites but something is specifically blocking the Windows Update connection. It is commonly caused by incorrect proxy settings, a firewall rule, or a corrupted network configuration.

Affected Models

Windows 10
Windows 11
Windows 8.1

Common Causes

Incorrect or leftover proxy server settings are redirecting Windows Update traffic
A firewall rule on your router or a third-party firewall program is blocking Microsoft's update servers
Your Windows network settings are corrupted, preventing proper DNS lookups
A VPN or corporate network policy is blocking access to Windows Update servers
Your internet connection is working but too unstable to complete a server handshake

How to Fix It

Reset your proxy settings. Open Command Prompt as Administrator and type: netsh winhttp reset proxy — then press Enter and restart your computer.

Leftover or incorrect proxy settings are the most common cause of this specific error. This command clears them completely.
Reset your network stack. In Administrator Command Prompt, run these two commands: netsh winsock reset — then: netsh int ip reset — then restart your PC.

A corrupted network configuration can block Windows Update even when other internet browsing works fine.
Temporarily disable your VPN if you are using one, then try Windows Update again.

VPN software routes traffic through different servers. Some VPN configurations block direct connections to Microsoft's update infrastructure.
Flush your DNS cache. Open Command Prompt as Administrator and type: ipconfig /flushdns — then try Windows Update again.

An outdated or corrupted DNS cache can cause Windows to look for Microsoft's servers at an old or wrong address.
Temporarily disable your third-party firewall or antivirus and try updating. If it works with the firewall off, add Windows Update as a trusted exception in your security software.

Make sure to re-enable your security software immediately after testing. Never leave your firewall disabled permanently.

When to Call a Professional

If you are on a company or school network, IT administrators may have intentionally restricted Windows Update. In that case, contact your IT department rather than trying to fix it yourself. For home users, if none of the steps below work, your ISP may need to check for routing issues to Microsoft's servers.

Frequently Asked Questions

Why can I browse the web but Windows Update still can't connect?

Windows Update connects to specific Microsoft server addresses and uses specific ports. A firewall or proxy might block those particular addresses while allowing normal website traffic. It is also possible your computer is connected through a proxy that handles web browsing but not Windows Update traffic. This is why resetting the proxy settings is the first recommended fix.

Can my router be blocking Windows Update?

Yes, some routers — especially those with parental controls or security features — can block connections to certain servers. Try connecting your computer directly to the modem with an ethernet cable and bypassing the router. If Windows Update works then, the router's settings need to be adjusted.

Is this error dangerous if I leave it unfixed?

Missing Windows updates is a security risk over time. Updates include patches for security vulnerabilities that hackers exploit. A computer that has not been updated in months becomes increasingly vulnerable. Fix this error soon — especially if you use the computer for banking, shopping, or any sensitive activity.