windows 10 dual logon

On windows 10, I notice that if a user is signed in and then either locks his computer/ or computer auto locks, an option to "sign in as other user" becomes present on the main logon screen. And basically someone else can sign onto the same system without logging out the previous user. Is there a way to disable this? If a user is on the machine I want that machine to accept no more console logons.
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JohnBusiness Consultant (Owner)Commented:
The new user with a new sign-on will not be able to access the other user's files. It should not be an issue. It is also roughly similar to Quick Sign On from Windows 7 forward.
The feature is called"fast user switching" and has been there since windows XP. Google "disable gas user switching".

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Eng. Nidal KamalInformation ConsultantCommented:
Good day,

To disable fast user switching feature please follow one of the solutions available in It also applies for Windows 10.
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Ha, "gas user switching", not bad, Mr. Autocorrection :-)
JohnBusiness Consultant (Owner)Commented:
You can disable fast user switching, but even if you use it, user B cannot see user A's files.
iamuserAuthor Commented:
Thanks guys
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