⚠️ 2 verified solutions available for Error 7011 — Last updated 2026-04-06
Error 7011 📋

Fix ERROR_CTX_MODEM_RESPONSE_ERROR — Windows Error Code 7011

Error 7011 (ERROR_CTX_MODEM_RESPONSE_ERROR) is a Windows Networking error that occurs when the modem did not accept the command sent to it. verify that the configured modem name matches the attached modem.. This guide provides step-by-step solutions to resolve this issue.

🏷️ Code: 7011 📛 ERROR_CTX_MODEM_RESPONSE_ERROR 📅 Updated: 2026-04-06 ⏱️ 2 Solutions
⚡ Quick Fix

Complete Network Reset: Open Command Prompt as Administrator

👇 See all 2 solutions below
🐞 Auto-Fix Script for Error 7011
⚠️ How to use: Open PowerShell as Administrator, paste the code above, and press Enter.
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📑 Table of Contents
What is Error 7011? Common Causes Step-by-Step Solutions Prevention Tips Related Errors

💡 What is Error 7011?

Windows System Error Code 7011, known as ERROR_CTX_MODEM_RESPONSE_ERROR, is a Networking error that occurs during advanced networking, Winsock, and IPSec. The error indicates that: The modem did not accept the command sent to it. Verify that the configured modem name matches the attached modem. When this error is encountered, the Windows operating system was unable to complete the requested operation within the networking stack subsystem. The error code 7011 is returned by the GetLastError() function and provides developers with a specific identifier to diagnose the root cause of the failure. The symbolic name ERROR_CTX_MODEM_RESPONSE_ERROR maps directly to this numeric code and is commonly referenced in Microsoft documentation, developer forums, and system logs. Understanding this error and its context within advanced networking, Winsock, and IPSec is essential for effective troubleshooting.

⚠️ Common Causes

  • System resource conflict: The modem did not accept the command sent to it. Verify that the configured modem name matches the attached modem.
  • Network driver outdated/incompatible
  • TCP/IP stack corruption
  • IP configuration incorrect
📚 Comprehensive Guide

Troubleshooting COM and DCOM Architectural Failures (Event ID 10016)

A comprehensive guide on Component Object Model (COM), Distributed COM (DCOM), and how to safely interpret and resolve Event ID 10016 errors.

Read the full guide →

✅ Step-by-Step Solutions

1 Complete Network Reset
  1. Open Command Prompt as Administrator
  2. Run: netsh winsock reset && netsh int ip reset
  3. Run: ipconfig /release && ipconfig /renew
  4. Restart your computer
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Show Advanced Solutions (1 more)
2 Advanced Diagnostic for ERROR_CTX_MODEM_RESPONSE_ERROR
  1. Open Windows Event Viewer (eventvwr.msc)
  2. Navigate to Windows Logs → System to find Event ID 7011
  3. Look for associated warnings that occurred immediately before the system crashed
  4. Right-click the entry and export the log file for further analysis

🎬 Video Tutorials

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How to fix Error 7011 (Ctx Modem Response Error)
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💻 Diagnostic Command

Run this PowerShell command to find related events in your system log:

Get-EventLog -LogName System -Newest 20 | Where-Object {$_.Message -like "*7011*" -or $_.Message -like "*ERROR_CTX_MODEM_RESPONSE_ERROR*"} | Format-List

💡 Open PowerShell as Administrator, paste the command above, and press Enter.

🛡️ Prevention Tips

  • Update drivers from manufacturer site
  • Monitor network utilization
  • Document network configuration
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Last updated: 2026-04-06
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Based on Official Microsoft Documentation
Solutions Tested on Windows 10 & 11
Error codes sourced from Microsoft Win32 SDK. Updated 2026-04-06.
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