Software⏱️ 4 min read📅 2026-06-15

How to Fix: Explorer.exe COMRuntime error: unexisting user can't get access permissions to COM server

Learn how to fix: Explorer.exe COMRuntime error: unexisting user can't get access permissions to COM server.

Quick Answer: Try checking your system settings or restarting.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. 🔧 Proven Troubleshooting Steps
  3. 🎯 Final Words

The COMRuntime error 'unexisting user can't get access permissions to COM server' in Explorer.exe is an issue that affects users who have enabled the ComPlus feature, which allows for elevated privileges to be granted to non-administrative users. This error occurs when the system cannot find a valid user account under whom the COM server should run.

This error can be frustrating as it prevents the user from accessing certain features and functions in Windows, even if they have administrative rights. In this guide, we will walk you through the steps to resolve this issue and regain access to the affected COM server.

🛑 Root Causes of the Error

  • The primary cause of this error is that the ComPlus feature has been enabled without a valid user account under whom the COM server should run. This can happen when the system administrator forgets to create or assign a user account for the ComPlus feature, or if the assigned user account does not have the necessary permissions.
  • Another possible cause of this error is that the system's security settings are too restrictive, preventing the system from finding a valid user account under whom the COM server should run. This can be due to overly strict group policy settings or incorrect registry entries.

🔧 Proven Troubleshooting Steps

Enabling ComPlus with a valid user account

  1. Step 1: Step 1: Create a new user account for the ComPlus feature. To do this, open the User Management console and create a new user account with the necessary permissions. Make sure to assign the user account to the local administrators group.
  2. Step 2: Step 2: Enable the ComPlus feature and configure it to run under the newly created user account. To do this, open the Group Policy Editor and navigate to Computer Configuration > Administrative Templates > System > Component Services > COM+ Security. Enable the 'COM+ Security' policy and set the 'Authentication' option to 'Use Logon Context'. Then, navigate to the 'Security' tab and assign the new user account to the 'Allow access to this COM+ object' list.
  3. Step 3: Step 3: Restart the system in order for the changes to take effect.

Modifying registry entries

  1. Step 1: Step 1: Open the Registry Editor and navigate to the key HKEY_LOCAL_MACHINE/system egistry unctions unas. Create a new DWORD value called 'AllowRunAs' and set its value to 0x00000001.
  2. Step 2: Step 2: Close the Registry Editor and restart the system in order for the changes to take effect.

🎯 Final Words

To resolve the COMRuntime error 'unexisting user can't get access permissions to COM server' in Explorer.exe, you can try enabling ComPlus with a valid user account or modifying registry entries. If you are still experiencing issues after trying these steps, it may be necessary to seek further assistance from a qualified system administrator.

Did this fix your problem?

If not, try searching for specific error codes.

🔍 Search Error Database

❓ Frequently Asked Questions

🛠️ Related Fixes

How to Fix: Pc crashes shortly after launching game (rainbow

Fix Pc crashes shortly after launching game (rainbow six siege). Compl

How to Fix: Installing an APK on a locked down phone

Installing an APK on a locked down phone: Try using a rooted device, e

How to Fix: New PC build- no signal and no clue

Fix New PC build- no signal and no clue. Complete troubleshooting guid