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Windows 11 - How to disable the preview on the task bar

Alejandra 55 Reputation points
2026-01-13T15:31:11.7133333+00:00

How can I disable the preview of the windows on the task bar? Even if I have it to never combine task bar buttons, still I get the preview of all the windoes open of the same application on each window.

It is really annoying because when I am writing at the bottom of the screen and accidentally the mouse goes down, the preview covers what I am writing.

Since it is not possible to move the task bar to the top anylonger on Windows 11, I don't know what to do.

Thank you for your help!

Windows for business | Windows 365 Business
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  1. Domic Vo 19,030 Reputation points Independent Advisor
    2026-01-13T16:08:13.8533333+00:00

    Hello,

    The behavior you're describing, taskbar thumbnail previews appearing even with “Never combine” enabled, is hardcoded into Windows 11’s shell experience and cannot be disabled via standard UI settings. Microsoft removed the legacy registry flags that previously allowed suppression of hover previews in Windows 10. In Windows 11, the thumbnail previews are tied to the Taskband.dll behavior and are triggered by mouse hover events over grouped or ungrouped taskbar buttons.

    There is no supported registry key to disable these previews entirely. However, you can delay their appearance by modifying the hover timeout. This doesn’t eliminate the previews but makes them less intrusive. Open Registry Editor and navigate to: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced Create a new DWORD value named ExtendedUIHoverTime and set it to a high value in milliseconds (e.g., 5000 for 5 seconds). This delays the preview popup after hover. You must log off or restart Explorer for the change to take effect.

    Be aware that this tweak is undocumented and not guaranteed to persist across feature updates. Microsoft does not officially support disabling taskbar previews, and modifying shell behavior beyond this point would require unsupported patching of system DLLs, which violates the Windows Code of Conduct and breaks update integrity.

    As for the inability to move the taskbar to the top, that restriction is by design in Windows 11. Microsoft removed the top-edge docking logic from the shell and has not reintroduced it despite user feedback. If this layout is critical to your workflow, the only supported workaround is to use third-party tools like StartAllBack or ExplorerPatcher, which re-enable legacy taskbar behavior. These tools are not endorsed by Microsoft but are widely used in enterprise environments where UI consistency is required.

    In short: you cannot disable previews entirely, but you can delay them using ExtendedUIHoverTime. If the layout continues to interfere with your work, consider using a third-party shell extension to restore Windows 10 behavior.

    I hope you've found something useful here. If it helps you get more insight into the issue, it's appreciated to accept the answer. Should you have more questions, feel free to leave a message. Have a nice day!

    Domic Vo.

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  1. Q&A Assist
    2026-01-13T15:31:21.1033333+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    To disable the window previews on the taskbar in Windows 11, you can adjust the settings related to taskbar behavior. However, the specific option to completely disable previews is not available in the standard settings. You can try the following steps to minimize the impact of the previews:

    1. Combine Taskbar Buttons: Although you mentioned you have it set to never combine, you might want to set it to "When taskbar is full" or "Always" to see if it changes how previews behave.
    2. Registry Edit: You may need to modify the Windows Registry to change the behavior of taskbar previews. This is a more advanced option and should be done with caution. You can look for settings related to taskbar previews under the registry path HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced.
    3. Feedback to Microsoft: Since you mentioned the taskbar cannot be moved to the top, consider providing feedback to Microsoft about this feature. They may consider it for future updates.

    Unfortunately, there isn't a straightforward way to completely disable the previews, but these adjustments might help manage the issue you are experiencing.

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