What is Error 2002?
Windows System Error Code 2002, known as ERROR_INVALID_WINDOW_STYLE, is a RPC & Network error that occurs during Remote Procedure Call (RPC) and network communication. The error indicates that: The window style or class attribute is invalid for this operation. When this error is encountered, the Windows operating system was unable to complete the requested operation within the network services subsystem. The error code 2002 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_INVALID_WINDOW_STYLE 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 Remote Procedure Call (RPC) and network communication is essential for effective troubleshooting.
Common Causes
- System resource conflict: The window style or class attribute is invalid for this operation.
- RPC server is unavailable
- Network connectivity issues
- Firewall blocking required ports
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
- Open Command Prompt as Administrator
- Run: netsh winsock reset
- Run: netsh int ip reset
- Run: ipconfig /flushdns
- 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 "*2002*" -or $_.Message -like "*ERROR_INVALID_WINDOW_STYLE*"} | Format-List💡 Open PowerShell as Administrator, paste the command above, and press Enter.
Prevention Tips
- Monitor network health regularly
- Document firewall rules
- Test connectivity after infrastructure changes