How to fix Error 1235 on Windows 11

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Windows 11 Error 1235: “The Request Was Aborted” Troubleshooting Guide

Why This Error Happens

Error 1235 typically occurs when a network connection or download request is terminated before completion, often due to interrupted network protocols, misconfigured network adapters, or corrupted network stack components. This can also happen when Windows Update, BITS (Background Intelligent Transfer Service), or another application attempting a network transfer encounters a firewall block, VPN interference, or a timeout caused by unstable connectivity. In some cases, corrupted TCP/IP settings or outdated network drivers prevent the request from being processed correctly.

Step-by-Step Resolution Guide

  1. Reset the TCP/IP Stack and Winsock Catalog
    Open Command Prompt as Administrator and run the following commands sequentially:
   netsh int ip reset
   netsh winsock reset
   ipconfig /release
   ipconfig /renew
   ipconfig /flushdns

Restart your PC after running these commands.

  1. Restart the BITS Service
    Press Win + R, type services.msc, and press Enter. Locate Background Intelligent Transfer Service, right-click it, select Restart. If it’s disabled, right-click → Properties → set Startup type to Automatic (Delayed Start).

  2. Check and Update Network Adapter Drivers
    Go to Device Manager (Win + X → Device Manager) → expand Network adapters → right-click your active adapter → Update driver → Search automatically for drivers. If a recent update caused the issue, try Roll Back Driver instead under adapter Properties → Driver tab.

  3. Temporarily Disable Firewall/VPN and Retest
    Go to Settings → Privacy & Security → Windows Security → Firewall & network protection. Temporarily turn off the firewall for your active network profile, then retry the failed action. If it succeeds, add an exception for the specific app/port instead of leaving the firewall disabled.

  4. Run Windows Network Troubleshooter
    Navigate to Settings → System → Troubleshoot → Other troubleshooters → run Network Adapter and Incoming Connections troubleshooters to auto-detect and fix configuration issues.

Alternative or Verification Steps

  • Verify the fix: Repeat the original action (file download, update check, or app request) that triggered Error 1235. If it completes without interruption, the issue is resolved.
  • Alternative solution: If the error persists, try performing the request over a different network (e.g., mobile hotspot) to rule out ISP or router-level interference, or use sfc /scannow and DISM /Online /Cleanup-Image /RestoreHealth to repair corrupted system files that may affect network services.