Fix ERROR_EVENT_PENDING (0x000002C7) on Windows 10/11

Quick answer for advanced users

Reset Winsock and TCP/IP stack in an admin command prompt: netsh winsock reset and netsh int ip reset. Then reboot. That clears most 0x000002C7 cases.

What this error really means

I've seen ERROR_EVENT_PENDING (0x000002C7) on Windows 10 build 1909 and Windows 11 after a VPN disconnects badly. It shows up in Event Viewer under TDI (Transport Driver Interface). TDI is old-school — it's how Windows talks to network protocols like TCP/IP. This error means a network event got stuck waiting. Usually it's a driver that didn't clean up after itself. You'll see it with apps like Cisco AnyConnect, OpenVPN, or even some old gaming network code. The system doesn't crash, but network things stop working until you reboot.

Fix steps (main method)

1. Open an admin command prompt. Press Win+R, type cmd, then press Ctrl+Shift+Enter. Click Yes on the UAC prompt.
2. Reset Winsock. Type netsh winsock reset and press Enter. Wait for the message that says it worked.
3. Reset TCP/IP stack. Type netsh int ip reset and press Enter.
4. Reboot your computer. This step is not optional. The changes only apply after restart.

That's it for most people. If the error was caused by a VPN or security software, the reset clears the stuck TDI state.

Alternative fixes if main fails

Disable and re-enable your network adapter

Open Device Manager (Win+X, select Device Manager). Find your network adapter under Network adapters. Right-click it, choose Disable device. Wait 10 seconds. Right-click again, Enable device. This forces the TDI driver to reload fresh.

Uninstall problem software

If you use a VPN or a firewall like ZoneAlarm or Comodo, try uninstalling it temporarily. I had this error with an old version of Cisco AnyConnect. After removing it, the error stopped. Reinstall a newer version if you need it.

Run System File Checker

Corrupted system files can cause this too. Open admin command prompt and run sfc /scannow. Let it finish, then reboot. It might take 15-20 minutes. Don't close the window.

Use PowerShell to fix TDI directly

This is for advanced users. Open PowerShell as admin and run: Get-WmiObject -Class Win32_NetworkAdapter | Where-Object {$_.NetEnabled -eq $true} | ForEach-Object { $_.Reset() }. This resets all active network adapters without a reboot. Works on Windows 10 2004 and newer.

Boot into Safe Mode with Networking

If the error returns every boot, try this. Press Shift+Restart from the login screen. Go to Troubleshoot > Advanced Options > Startup Settings > Restart. Press 5 for Safe Mode with Networking. If the error is gone there, it's a third-party driver or software causing it. Uninstall anything you added recently.

Prevention tips

This error usually comes from bad network driver updates or VPNs that don't disconnect cleanly. Here's how to avoid it:

• Update your network drivers from the manufacturer's website, not Windows Update. Intel and Realtek have bugs sometimes.
• When you close a VPN, use its disconnect button, not a force close.
• Don't install multiple VPN clients on the same Windows install. They fight over TDI.
• If you use Windows 11, stick to WSL2 for Linux networking. WSL1 had TDI issues.

I've been helping people with this error for years. The Winsock reset fixes 9 out of 10 cases. If you're the 1 in 10, the alternative steps above will get you sorted.