How-To Geek

Increase the Speed of the Aero Taskbar Thumbnails in Windows 7

By default you may notice that there is a slight delay when hovering your mouse over a Taskbar Thumbnail. Here is a neat registry hack that will allow you to speed it up.

Registry Hack

First type regedit into the search box in the Start Menu and hit Enter.


Now navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced and right-click to create a new DWORD and name it ExtendedUIHoverTime.


Now double-click on it and give it a Decimal value of “1” click OK, close out of Registry Editor, then logoff and back on for it to go into effect.


When you come back, you’ll notice when you hover your mouse over a thumbnail of an open app on the Taskbar the preview pops up instantly with no delay.


Slow it Down

If for some reason you want to slow it down you can do that too. Just change the Decimal value to something else like 1000 which is milliseconds. Then the delay will be a lot longer. You can change the value to whatever you want for your needs. We’re not sure why anyone would want to slow the preview down, but you never know.


If you’re annoyed by the small delay that takes place when hovering over a thumbnail on the Taskbar, this neat registry hack will fix the annoyance. If you want to increase the size of the Thumbnail Previews check out our article on using Windows 7 Taskbar Thumbnail Customizer.

Brian Burgess worked in IT for 10 years before pursuing his passion for writing. He's been a tech blogger and journalist for the past seven years, and can be found on his about me page or Google+

  • Published 06/23/10

Comments (17)

  1. BobbyPhoenix

    I use 5000. I would rather click on them to show the preview because with using many open windows, it gets annoying when you mouse over the taskbar, and they pop up all the time. I also set the live preview to 5000 for the same reason. It’s much easier to click on the window you want by choice than have them keep popping up.

  2. Mifas

    Nice Tip. Thanks

  3. SquareWheel

    I see the last screenshot shows the hexadecimal setting checked. I assume this is a mistake?

  4. SoulDestroy

    Gmail. I like the fact that one account can connect me to my email and Youtube accounts, as well as my online documents, among other things.

  5. Ahmed

    Well, Good tip

    Vista didnt had it :)

  6. Christian

    Excellent Tip, Thanks :)

  7. prasit

    How do i run windows xp on windows 7
    cos i have windows xp Bedford i download windows xp but i do not when go download windwos xp i can run windows ‘7 but i boot up i go to windows xp but sad u missing the boot
    i don’t know what to do can u help me???

  8. Rob

    This is a nice tweak. However, I would also like the option to change the speed at which the thumbnail disappears. Now the speeds are really out of sync for me.

  9. alexjordan

    wonderful, thank you

  10. kim

    I agree with Rob above. I like this, but since I roll over them by accident fairly often, I’d like to know how to also get them to disappear immediately.

  11. Parthiban Ilango

    NIce one

  12. ashu

    nice one.

  13. kirk

    do i do the same steps if i have win7 64 bit

  14. Aery

    Quite useful, everyone should try this.

  15. David

    “right-click to create a new DWORD” is meaningless jargon to me. Couldn’t do it.

  16. zach

    its not working :/

  17. vilma

    What a wonderful tip, I love it :D

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