Complete Network Reset: Open Command Prompt as Administrator
👇 See all 2 solutions below
What is Error 7015?
Windows System Error Code 7015, known as ERROR_CTX_MODEM_RESPONSE_BUSY, is a Networking error that occurs during advanced networking, Winsock, and IPSec. The error indicates that: Busy signal detected at remote site on callback. When this error is encountered, the Windows operating system was unable to complete the requested operation within the networking stack subsystem. The error code 7015 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_BUSY 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: Busy signal detected at remote site on callback.
- Network driver outdated/incompatible
- TCP/IP stack corruption
- IP configuration incorrect
Mastering SFC and DISM: The Complete System Repair Guide
An in-depth encyclopedia on successfully repairing corrupted Windows image files and system components using SFC and DISM command line tools.
Read the full guide →Step-by-Step Solutions
- Open Command Prompt as Administrator
- Run: netsh winsock reset && netsh int ip reset
- Run: ipconfig /release && ipconfig /renew
- Restart your computer
Video Tutorials
Diagnostic Command
Run this PowerShell command to find related events in your system log:
Get-EventLog -LogName System -Newest 20 | Where-Object {$_.Message -like "*7015*" -or $_.Message -like "*ERROR_CTX_MODEM_RESPONSE_BUSY*"} | 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