How to stop auto-login in Windows 10 Home with last user and let me choose the account as it was in Windows 7 Home?

Thank you for posting your query in Microsoft Community.

I understand the inconvenience you are facing currently. Let me help you in resolving the issue. 

I would like to inform you that this issue might occur due to user account settings.
Let’s try the following methods and check if it helps.
Method 1:

I would suggest you to check the auto login settings.

a.    Press Windows Key + R and type Regedit.exe box.

b.    Scroll to: HKEY_LOCAL_Machine\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\Winlogon

c.    Add a value for: DontDisplayLastUserName

d.    Type: REG_SZ

e.    Value: 0

f.     The value DontDisplayLastUserName determines whether the logon dialog box displays the username of the last user that logged onto the PC.

g.    The value does not exist by default. If it exists, you must set it to 0 or the value of DefaultUser will be wiped and autologon will fail.

Registry Note: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry.

Method 2:

Let’s try to change the local security settings.

a.    Press the Windows + R keys to open the Run dialog, type secpol.msc, and press Enter.

b.    In the left pane, double click/tap on Local Policies to expand it, and click/tap on Security Options to open it.

c.    In the right pane, double click/tap on Interactive logon: Do not display last user name.

d.    To Sign in to Windows 8 with Password Only, Select (dot) Disabled, click/tap OK.

e.    Close the Local Security Policy Window, restart the computer and check if it helps.

Hope the information helps. Please let us know if the issue persist and we will be happy to assist you further.

Sorry, both methods don't work.

Method 1:

I added "DontDisplayLastUserName" with value 0, restarted PC, logged out under my admin user, logged in as my son, shutdown PC, started PC, auto-login as my son happened.

I'm awaiting an option like "DontAutoLoginLastUserWhenHasNoPassword" = 1 (on).

Method 2:

I'm using Windows 10 Home - secpol.msc is not installed - and if - "Password Only" sign-in is NOT that what I want for my son.

I don't understand that someone from MS support does not try to test this problem on a test PC. Instead of that I should try something around. The problem is described very clear above to re-test. :(

My 2nd son also has his own local account without a password.

Now when son #2 starts the PC he will be auto-login with the last user who was son #1.

I will waiting for the correct registry entry or Windows 10 fix. THANKS

After over a year of waiting for this to be fixed by Microsoft I finally discovered a solution that works:

http://superuser.com/a/953898

Hope you find it helpful, too.

This worked for me:

https://superuser.com/questions/952868/can-i-disable-auto-logon-on-windows-10-home

The instructions are clear and concise and should work if carefully followed.