How to Fix the Task Manager Duplication Bug on Windows 11

Task Manager is one of those tools we all rely on when Windows starts acting up. Whether you’re checking system performance or ending a frozen app, it’s the go-to utility. But recently, many Windows 11 users have been running into a strange issue where Task Manager duplicates itself, showing multiple identical windows, duplicated tabs, or displaying the same processes twice.

This duplication bug usually shows up after a system update or glitch in the Windows Shell components. As annoying as it looks, the good news is that it’s fixable. In this guide, we’ll walk you through all the working methods to stop Task Manager from duplicating on Windows 11.

How to Fix Task Manager Duplication Bug on Windows 11

You don’t need any third-party tools to fix the Task Manager duplication bug. Everything can be done using built-in Windows utilities. Just make sure you have administrator access because some steps involve system repair commands and updating system components.

Below are all the effective solutions to get Task Manager back to normal.

1. Restart Task Manager Completely

Sometimes Windows doesn’t correctly refresh the Task Manager interface, causing duplicate entries or windows.

1. Press Ctrl + Shift + Esc to open Task Manager.
2. Click File in the top menu.
3. Select Run new task.
4. Type: taskmgr /reset
5. Press Enter to restart Task Manager cleanly.

The reset parameter forces Task Manager to reload its UI configuration, which often clears duplication issues instantly.

2. Restart Windows Explorer

A corrupted Windows Explorer session can cause Task Manager’s interface to misbehave.

1. Press Ctrl + Shift + Esc to open Task Manager.
2. In the Processes tab, find Windows Explorer.
3. Select it and click Restart.

This reloads the Windows Shell, Start menu, taskbar, and UI elements related to Task Manager.

3. Clear Task Manager Configuration Files

Task Manager stores display preferences that sometimes glitch after updates.

1. Press Windows + R to open Run.
2. Enter the following path: %AppData%\Microsoft\Windows\TaskManager
3. Delete all files in the folder.
4. Restart your PC.

Windows auto-rebuilds fresh Task Manager configuration files, removing corrupted entries that cause duplicated elements.

4. Update Windows 11 to the Latest Build

Microsoft has patched UI bugs like this in several cumulative updates. If you’re running an older build, the duplication issue may persist.

1. Open Settings.
2. Go to Windows Update.
3. Click Check for updates.
4. Install all available updates and restart.

If this bug appeared right after an update, the next patch usually fixes it.

5. Run SFC and DISM to Repair System Files

Corrupt system files can cause Task Manager’s UI to duplicate or behave unpredictably.

1. Press Start, type cmd, and select Run as administrator.
2. Run the System File Checker: sfc /scannow
3. Once it completes, run DISM: DISM /Online /Cleanup-Image /RestoreHealth
4. Restart your PC.

These commands repair missing or corrupted Windows components that may be causing Task Manager to malfunction.

6. Turn Off Experimental Features in Task Manager

Windows 11 often tests UI features in certain builds through experimental options. Sometimes these experiments cause duplication or layout bugs.

1. Open Task Manager.
2. Click Settings in the left sidebar.
3. Scroll down to Experimental features.
4. Turn off everything listed.
5. Close Task Manager and reopen it.

Disabling experimental options forces Task Manager to fall back to stable UI elements.

7. Reinstall the Windows Shell Components (Advanced)

If the duplication persists, the Shell infrastructure may be corrupted.

1. Open PowerShell (Admin) from the Start menu.
2. Run the following command: Get-AppxPackage -allusers MicrosoftWindows.Client.Core | Reset-AppxPackage
3. Restart your PC.

This reinstalls core UI components, fixing deep-level visual issues.

8. Create a New Windows User Profile

If Task Manager only glitches in your current user account, your profile may be corrupted.

1. Open Settings.
2. Go to Accounts > Other users.
3. Click Add account.
4. Create a new local or Microsoft account.
5. Log in to the new profile and check Task Manager.

If the issue disappears, your old profile has corruption that may require resetting.

Wrapping Up

The Task Manager duplication bug can be frustrating, especially when you rely on it to monitor your system. But with a few resets, repairs, or updates, you can get it back to normal quickly. Most users find that a clean reset of Task Manager or restarting Windows Explorer solves it instantly, while deeper issues may require system repair tools like SFC or DISM.

If the duplication keeps returning, keeping Windows updated and disabling experimental features in Task Manager can prevent the bug from coming back.