Reg Add Hkcu Software Classes Clsid 86ca1aa034aa4e8ba50950c905bae2a2 Inprocserver32 Ve D F Portable [WORKING]

Run this PowerShell command to list all user-mode InprocServer32 keys that point to non-system paths:

Get-ChildItem "HKCU:\Software\Classes\CLSID" -Recurse | Where-Object  $_.PSChildName -eq "InprocServer32"  | ForEach-Object  
    $defaultValue = (Get-ItemProperty $_.PSPath -Name "(default)" -ErrorAction SilentlyContinue).'(default)'
    if ($defaultValue -and ($defaultValue -notlike "C:\Windows\*") -and ($defaultValue -notlike "C:\Program Files*")) 
        Write-Host "SUSPICIOUS: $_ -> $defaultValue" -ForegroundColor Red

Suppose the intended command was:

reg add "HKCU\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509-50c905bae2a2\InprocServer32" /ve /d "C:\some\portable.dll" /f

Enable command line auditing (Event ID 4688) and look for:

Note: To undo this change later, you can delete the key using: reg delete "hkcu\software\classes\clsid\86ca1aa0-34aa-4e8b-a509-50c905bae2a2" /f

To restore the classic context menu in Windows 11 by default, use the following registry command. This "feature" masks the modern COM object that powers the compact Windows 11 menu, forcing the system to fall back to the legacy "Windows 10 style" menu without requiring you to click "Show more options". Microsoft Learn Registry Command Copy and paste this into a Command Prompt Windows Terminal (Admin is recommended but often not required for HKCU): Pureinfotech Run this PowerShell command to list all user-mode

reg add "HKCU\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509-50c905bae2a2\InprocServer32" /f /ve Use code with caution. Copied to clipboard Steps to Apply the Change For the change to take effect, you must restart the Windows Explorer process or your computer. Run the command above in Command Prompt or Terminal. Restart Explorer by running these two commands in the same window: taskkill /f /im explorer.exe start explorer.exe Use code with caution. Copied to clipboard

: Right-click any file or folder. You should now see the full classic menu immediately. ampd.co.th How to Undo (Revert to Windows 11 Style)

If you want to go back to the standard Windows 11 compact menu, delete the registry key using this command: Microsoft Learn

reg delete "HKCU\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509-50c905bae2a2" /f Use code with caution. Copied to clipboard Enable command line auditing (Event ID 4688) and

(Remember to restart Explorer again after running the delete command)

[ARTICLE] Restore old Right-click Context menu in Windows 11

This paper analyzes the command reg add HKCU\Software\Classes\CLSID\86CA1AA0-34AA-4e8b-A509-50C905BAE2A2\InprocServer32 with flags /ve, /d, and /f, often used in Windows environments to modify the default value of an InprocServer32 subkey. Such modifications can redirect COM object instantiation to an arbitrary DLL, enabling persistence, privilege escalation, or malware execution. This study explains the syntax, registry paths, security risks, and detection methods.

A normal reg add command looks like this: No reboot required

reg add "HKCU\Software\Classes\CLSID\CLSID\InprocServer32" /ve /d "C:\Path\file.dll" /f

Your string contains:

If run as-is, this command would fail or cause registry corruption attempts.

No reboot required; COM activation occurs when a legitimate application (e.g., Explorer, web browser, Office) invokes the hijacked CLSID. The HKCU location ensures persistence without administrative privileges.

Standard CLSID example:
00024500-0000-0000-C000-000000000046 (Microsoft Office)

86ca1aa034aa4e8ba50950c905bae2a2 is 32 hex characters with no hyphens — that’s actually a GUID without braces or hyphens, possible, but extremely rare in official software. It is more common in:

Searching this GUID in security databases shows no known legitimate software — a red flag.