Sticky Keys is an accessibility feature in Windows, designed for people who have difficulty holding down two or more keys at a time. But when users play a game and press SHIFT, CTRL or ALT 5 times, the Sticky Keys dialog opens and they can’t play their game properly. So, to disable the dialog permanently follow the tutorial below:

1. Open Control Panel->Accessibility Options.

2. Uncheck ”Use StickyKeys” and click on the “Settings” button on the right side.

3. Uncheck the option “Use Shortcut” and click on OK.

4. Now again click on OK.

That’s it. Now the StickyKeys dialog will be permanently disabled.

To disable Sticky Keys feature in Windows 10, open Control Panel > Ease of Access Center > Make the keyboard easier to use > Uncheck the Turn on Sticky keys checkbox as shown above in the image.

Update: Also see Press multiple keys easily using Sticky Keys in Windows 7 / 8