Press and hold the Shift key for 5 seconds
In the Sticky Keys window, select Turn off Sticky Keys
If Sticky Keys is enabled through Settings:
Windows 10/11: Settings → Accessibility → Keyboard → Sticky Keys → Off
If Sticky Keys is enabled through Control Panel:
Control Panel → Ease of Access Center → Make the keyboard easier to use → Turn off Sticky Keys
If Sticky Keys keeps re-enabling:
Restart the PC
Check for accessibility-related shortcuts or third-party keyboard utilities
Update Windows and keyboard drivers