How to Change Time to Activate Window by Hovering Over with Mouse in Windows
By default in Windows, you need to click/tap on a window to make it active and bring it into focus.
If you turn on Activate a window by hovering over it with the mouse, you can activate a window by hovering over it with the mouse pointer for a half second (500 ms) by default.
If you like, you can change the default time for how long you need to hover over a window before it activates to what you want instead.
This tutorial will show you how to change the default time to activate a window by hovering over it with the mouse pointer for your account in Windows 7, Windows 8, or Windows 10.
1. Press the Win+R keys to open Run, type regedit into Run, and click/tap on OK to open Registry Editor.
2. Navigate to the key below in the left pane of Registry Editor. (see screenshot below)
3. In the right pane of the Desktop key, double click/tap on the ActiveWndTrkTimeout DWORD to modify it. (see screenshot above)
4. Select (dot) Decimal, type in a number for how many milliseconds (ms) for the time you want, and click/tap on OK. (see screenshot below)
The default time is 500 ms. 1000 ms equals 1 second.
5. Close Registry Editor.
6. Sign out and sign in or restart the computer to apply.