switching users

/!\ Merry Christmas to all ! /!\



My problem : Alt+F4 give me the option of switching users but only the current user "nemo" is selectable
All users are set active including the built-in Administrator

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
HideFastUserSwitching = 0

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList
do not exist...

C:\Windows\system32>net users

User accounts for \\PC-NEMO

-------------------------------------------------------------------------------
Administrator DefaultAccount Guest nemo
The command completed successfully.

C:\Windows\system32>net user Administrator
User name Administrator
Full Name Administrator
Comment Built-in account for administering the computer/domain
User's comment
Country/region code 000 (System Default)
Account active Yes
Account expires Never

Password last set 21/12/2016 19:24:37
Password expires Never
Password changeable 21/12/2016 19:24:37
Password required Yes
User may change password Yes

Workstations allowed All
Logon script
User profile
Home directory
Last logon 25/12/2016 10:36:03

Logon hours allowed All

Local Group Memberships *Administrators
Global Group memberships *None
The command completed successfully.

C:\Windows\system32>

C:\Windows\system32>net user nemo
User name nemo
Full Name nemo
Comment
User's comment
Country/region code 000 (System Default)
Account active Yes
Account expires Never

Password last set 25/12/2016 10:10:14
Password expires Never
Password changeable 25/12/2016 10:10:14
Password required No
User may change password Yes

Workstations allowed All
Logon script
User profile
Home directory
Last logon 25/12/2016 10:28:18

Logon hours allowed All

Local Group Memberships *Hyper-V Administrator*Users
Global Group memberships *None
The command completed successfully.

I do not know why "Password required" is set to No
the result is that switching user is disabled everywhere

I have created another user "nemo2" for test

C:\Windows\system32>net user nemo2 /add
The command completed successfully.

C:\Windows\system32>net user nemo2
User name nemo2
Full Name
Comment
User's comment
Country/region code 000 (System Default)
Account active Yes
Account expires Never

Password last set 25/12/2016 11:19:46
Password expires 05/02/2017 11:19:46
Password changeable 25/12/2016 11:19:46
Password required Yes
User may change password Yes

Workstations allowed All
Logon script
User profile
Home directory
Last logon Never

Logon hours allowed All

Local Group Memberships *Users
Global Group memberships *None
The command completed successfully.

I should probably delete user "nemo" to check if it is back to normal
but I do not want to lose my profile

PS1: by running "net user nemo /passwordreq:yes" it is now correct, but still no user switching...

any idea ?