Windows 10 - Prevent new windows from stealing focus

https://community.spiceworks.com/topic/1749029-program-to-prevent-any-windows-window-from-taking-precedence-focus

• Windows>Run>Regdit
• HKEY_CURRENT_USER\Control Panel\Desktop
• Edit UserPreferenceMask value to be 9F 3E 07 80 12 00 00 00
• (there are many numbers in here, I only had to update the 9F 3E 07 parts and the rest of the value remained)
• HKEY_CURRENT_USER\Control Panel\Desktop
• Edit ActiveWndTrkTimeout, change to 150 in decimal
• HKEY_CURRENT_USER\Control Panel\Desktop 
• Edit ForegroundFlashCount, change to something like 7000 in decimal
• Optional, not sure if this does anything
• HKEY_CURRENT_USER\Control Panel\Desktop 
• Edit ForegroundLockTimeout to something very large (e.g. 9999999 in decimal)
• Restart