🎮 Common Scenario: Are you experiencing Error 13926 while launching or installing Valorant? The solutions below directly address the system interactions specific to this application.
Take Ownership of the Resource: Open Command Prompt as Administrator
👇 See all 3 solutions belowThe Ultimate Auto-Fix Script
Download our advanced, custom-built Smart Diagnostic Script (.bat). It safely creates a System Restore Point, applies targeted fixes based on advanced diagnostics for Error 13926, and generates a detailed HTML repair report.
What is Error 13926?
Windows System Error Code 13926, known as ERROR_IPSEC_DOSP_RECEIVED_MULTICAST, is a Internet & WinHTTP error that occurs during WinHTTP, WinInet, and internet protocols. The error indicates that: IPsec DoS Protection received an IPsec specific multicast packet which is not allowed. When this error is encountered, the Windows operating system was unable to complete the requested operation within the internet services subsystem. The error code 13926 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_DOSP_RECEIVED_MULTICAST 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
- Your user account lacks NTFS permissions on the target file or folder
- User Account Control (UAC) is blocking the operation
- The file is owned by SYSTEM or TrustedInstaller and requires ownership transfer
- Group Policy or antivirus software is restricting access
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An encyclopedia on the core architecture of the Windows Registry, how to fix registry corruption errors, and why registry cleaners should be avoided.
Read the full guide →Step-by-Step Solutions
- Open Command Prompt as Administrator
- Run: takeown /f "C:\path\to\file" /r /d y
- Then run: icacls "C:\path\to\file" /grant %username%:F /t
- Replace the path with the actual file or folder causing Error 13926 (ERROR_IPSEC_DOSP_RECEIVED_MULTICAST)
- Retry the operation that triggered Error 13926 (ERROR_IPSEC_DOSP_RECEIVED_MULTICAST)
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 "*13926*" -or $_.Message -like "*ERROR_IPSEC_DOSP_RECEIVED_MULTICAST*"} | Format-List💡 Open PowerShell as Administrator, paste the command above, and press Enter.
Prevention Tips
- Avoid modifying files in C:\Windows\System32 unless absolutely necessary
- Use 'Run as Administrator' when performing system-level operations
- Keep a backup admin account in case your primary account gets locked