⚠️ 2 verified solutions available for Error 13823 — Last updated 2026-03-09
Error 13823 📋

Fix ERROR_IPSEC_IKE_CRITICAL_PAYLOAD_NOT_RECOGNIZED — Windows Error Code 13823

Error 13823 (ERROR_IPSEC_IKE_CRITICAL_PAYLOAD_NOT_RECOGNIZED) is a Windows Internet & WinHTTP error that occurs when don't know how to process critical payload.. This guide provides step-by-step solutions to resolve this issue.

🏷️ Code: 13823 📛 ERROR_IPSEC_IKE_CRITICAL_PAYLOAD_NOT_RECOGNIZED 📅 Updated: 2026-03-09 ⏱️ 2 Solutions
⚡ Quick Fix

Reset Internet Settings: Open Command Prompt as Administrator

👇 See all 2 solutions below
🐞 Auto-Fix Script for Error 13823
⚠️ How to use: Open PowerShell as Administrator, paste the code above, and press Enter.
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📑 Table of Contents
What is Error 13823? Common Causes Step-by-Step Solutions Prevention Tips Related Errors

💡 What is Error 13823?

Windows System Error Code 13823, known as ERROR_IPSEC_IKE_CRITICAL_PAYLOAD_NOT_RECOGNIZED, is a Internet & WinHTTP error that occurs during WinHTTP, WinInet, and internet protocols. The error indicates that: Don't know how to process critical payload. When this error is encountered, the Windows operating system was unable to complete the requested operation within the internet services subsystem. The error code 13823 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_IPSEC_IKE_CRITICAL_PAYLOAD_NOT_RECOGNIZED 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 WinHTTP, WinInet, and internet protocols is essential for effective troubleshooting.

⚠️ Common Causes

  • System resource conflict: Don't know how to process critical payload.
  • Proxy misconfigured
  • SSL/TLS handshake failure
  • Client certificate expired
📚 Comprehensive Guide

The Definitive Guide to Missing DLL Errors and Safe Restoration

An encyclopedic guide on understanding Dynamic Link Libraries, diagnosing 'DLL is missing' errors, reading dependencies, and safe restoration methods.

Read the full guide →

✅ Step-by-Step Solutions

1 Reset Internet Settings
  1. Open Command Prompt as Administrator
  2. Run: netsh winhttp reset proxy
  3. Open Internet Options → Advanced → Reset
  4. Restart your browser and applications
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Show Advanced Solutions (1 more)
2 Advanced Diagnostic for ERROR_IPSEC_IKE_CRITICAL_PAYLOAD_NOT_RECOGNIZED
  1. Open Windows Event Viewer (eventvwr.msc)
  2. Navigate to Windows Logs → System to find Event ID 13823
  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 13823 (Ipsec Ike Critical Payload Not Recognized)
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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 "*13823*" -or $_.Message -like "*ERROR_IPSEC_IKE_CRITICAL_PAYLOAD_NOT_RECOGNIZED*"} | Format-List

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

🛡️ Prevention Tips

  • Use centralized proxy management
  • Keep root certificates updated
  • Disable legacy SSL 3.0 protocol
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Last updated: 2026-03-09
📖
Based on Official Microsoft Documentation
Solutions Tested on Windows 10 & 11
Error codes sourced from Microsoft Win32 SDK. Updated 2026-03-09.
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