[FIXED] How to change Windows 10 login screen inactivity timeout?

Issue

We are developing some MFA (multi-factor authentication) support on Windows. After entering the user password it will have other challenge like email/phone calls.

But on Windows 10 we found that the login screen (not remote) will close after 30s of inactivity. In some cases the email/phone challenge may take more than 30s, and logon screen being closed will stop the email/phone wait.

Is there any way, like registry, to change the Windows 10 logon timeout value?

Solution

Thanks to a customer with paid MS support account.

The registry controlling the login screen timeout is:

Key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Authentication\LogonUI
DWORD Value: IdleTimeOut
Unit: msec

Answered By - baldpate

Answer Checked By - Marie Seifert (PHPFixing Admin)