ActiveWndTrackTimeout Value Being Ignored

I had Win8 and "ActiveWndTrackTimeout" was working fine, but when I updated to Win8.1 it stopped working. I had to RENAME "ActiveWndTrackTimeout" to "ActiveWndTrkTimeout", sign out and in, and now it works in Win8.1 too.

Maybe try ActiveWndTrkTimeout. http://technet.microsoft.com/en-us/library/cc957203.aspx

Such an old question but still appears to be valid even for windows 10 (Seriously Microsoft you should fix it once and for all)

I started window 10 with Windows 10 1703 (15063.1387 - I don't think these minors are important).

I had configured: At path: HKEY_CURRENT_USER\Control Panel\Desktop\ value: ActiveWndTrackTimeout to 2000 (ms)

After upgrade to Windows 10 1709 (16299.461) everthing stopped working again. I haved added a registry DWORD key ActiveWndtrkTimeout with the same value (leaving the old key there) and the raise delay started to work again.

From the MSDN:

ActiveWndTrkTimeout

HKCU\Control Panel\Desktop

REG_DWORD
Milliseconds
0

0 is the default value.

Note: I want to get one disinformation corrected

There is also a registry entry MouseHoverTime at HKEY_CURRENT_USER\Control Panel\Mouse. This entry does not change the window raise delay. It changes how fast are the taskbar information & preview shown.

An update 17/12/2020

Here we go again, sigh Microsoft you should really improve your testing!

After Windows 1909 (OS Build 18363.1139) update the hovering delay stopped working again! I have added the deleted ActiveWndTrkTimeout again, but nothing happened to my surprise. (even after rebooting)

What you have to do Control Panel\All Control Panel Items\Ease of Access Center\Make the mouse easier to use and uncheck the checkbox Activate a window by hovering over it with the mouse click on apply button. Then check the checkbox again and click on apply button again. Now it works again!