⚠️ 2 verified solutions available for Error 1902 — Last updated 2026-03-13
Error 1902 📋

Fix ERROR_INVALID_FORM_NAME — Windows Error Code 1902

Error 1902 (ERROR_INVALID_FORM_NAME) is a Windows RPC & Network error that occurs when the specified form name is invalid.. This guide provides step-by-step solutions to resolve this issue.

🏷️ Code: 1902 📛 ERROR_INVALID_FORM_NAME 📅 Updated: 2026-03-13 ⏱️ 2 Solutions

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⚡ Quick Fix

Reset Network Stack: Open Command Prompt as Administrator

👇 See all 2 solutions below

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📑 Table of Contents
What is Error 1902? Common Causes Step-by-Step Solutions Prevention Tips Related Errors

💡 What is Error 1902?

Windows System Error Code 1902, known as ERROR_INVALID_FORM_NAME, is a RPC & Network error that occurs during Remote Procedure Call (RPC) and network communication. The error indicates that: The specified form name is invalid. When this error is encountered, the Windows operating system was unable to complete the requested operation within the network services subsystem. The error code 1902 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_FORM_NAME 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

  • RPC server is unavailable
  • Network connectivity issues
  • Firewall blocking required ports
  • Remote endpoint timeout
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✅ Step-by-Step Solutions

1 Reset Network Stack
  1. Open Command Prompt as Administrator
  2. Run: netsh winsock reset
  3. Run: netsh int ip reset
  4. Run: ipconfig /flushdns
  5. Restart your computer
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2 Check RPC Service
  1. Open services.msc
  2. Ensure 'Remote Procedure Call (RPC)' is Running and Automatic
  3. Also check 'DCOM Server Process Launcher'
  4. Restart both if stopped

🎬 Video Tutorials

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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 "*1902*" -or $_.Message -like "*ERROR_INVALID_FORM_NAME*"} | 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
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Last updated: 2026-03-13
📖
Based on Official Microsoft Documentation
Solutions Tested on Windows 10 & 11
Error codes sourced from Microsoft Win32 SDK. Updated 2026-03-13.
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