Reg Add Hkcu Software Classes Clsid 86ca1aa034aa4e8ba50950c905bae2a2 Inprocserver32 Ve D F 2021 |link|

How to use reg add to modify HKCU\Software\Classes\CLSID86ca1aa0-34aa-4e8b-a509-50c905bae2a2\InprocServer32 — safe, practical guide (Windows 10 / 11 / 2021)

Warning: editing the registry can break system behavior. Back up the registry or create a restore point before making changes.

7. Recommendation

• Do not run this command unless you are certain the CLSID belongs to your own test environment.
• If this is for learning: practice in a VM or isolated system.
• If found in logs/scripts – investigate further for possible malware or typo.

The command you provided contains several syntax errors and appears to be attempting to create a Registry Key rather than add a specific value. Do not run this command unless you are

Based on the structure ...ve d f 2021, it is highly likely you are trying to create a key named 2021 inside the InprocServer32 directory, or you are trying to set a value but used incorrect switches. The command you provided contains several syntax errors

Here is the guide to correcting and running this command. Import to restore: reg import backup-clsid.reg

⚠️ Important Warning

Editing the Windows Registry can cause system instability or application errors if done incorrectly. The CLSID 86ca1aa0-34aa-4e8b-a509-50c905bae2a2 is a valid Windows ID often associated with the File Explorer Command Module (used for the context menu). Proceed with caution.

Example PowerShell alternative (creates key and sets default)

New-Item -Path "HKCU:\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509-50c905bae2a2\InprocServer32" -Force
Set-ItemProperty -Path "HKCU:\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509-50c905bae2a2\InprocServer32" -Name "(default)" -Value ""

After adding (optional but typical)

COM classes often need ThreadingModel. To add it:

reg add "HKCU\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509-50c905bae2a2\InprocServer32" /v "ThreadingModel" /t REG_SZ /d "Both" /f

5. /d

• Parameter: Stands for the data to be assigned to the value. This option specifies the value data to be added.

Recovery / rollback

• To delete the key you created:

reg delete "HKCU\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509-50c905bae2a2" /f

• To restore a backed-up .reg file:
  • Export before changes:

    reg export "HKCU\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509-50c905bae2a2" backup-clsid.reg
    

  • Import to restore:

    reg import backup-clsid.reg