Guest Account in Windows 10

There's a way that seems to be hidden in the cmd so far.

Here's what I used: http://www.howto-connect.com/windows-10-tips-enable-administrator-guest-account/

Windows 10 is not done why would they give out an operating system that's not done, and why is it free probably because they want us to find the bugs and report them. 

I just left windows 10 and went back to windows 8.1 which has a guest account.

Same thing here. It seems that via command prompt Guest activated, but it never appears to login list (Administrator account activating works fine and it appears to login list without problems).

So I made local account without password ("Visitor") and hopefully it works like I think.

I did the same thing.  I created a local "Guest User" account as a work around.  The steps are:

1. Start Menu > Settings
2. Click on Family & Other Users
3. Click on Add someone else to this PC
4. Click on This person doesn't have an email address
5. Click on Add a user without a Microsoft account
6. Add user name (e.g., "Guest User" or "Visitor") - l Ieft the password blank

You can't re-create an account named 'Guest' because technically it still exists.  It's just not activated.  See link below.  

Do you have an external or cloud backup drive that would have a copy of the lost files?

Try looking in c:\users\guest to see if it exists and if it has sub-directories ... my guess is it does not exist in Win10, but it should exist in your backup files.  

Also look in c:\windows.old\users to see if a 'Guest' user exists with folders

I don't know if you will be able to recover the Windows 8 stuff you lost in the old Guest account, but you can try to re-activate the old 'Guest' account using the Administrator Command Prompt.  See http://www.howto-connect.com/windows-10-tips-enable-administrator-guest-account/ for detailed instructions.  

I highly recommend you abandon the practice of saving anything under a Guest account.  

I did exactly that but I kept on getting an error (below) and it refused to allow me to sign in.

"The user profile service serivece failed the sign-in

User profile cannot be loaded"

Is there a solution to this problem?

I will not advice doing the recommendations. I ended up with a flashing screen on the guest account. Took a while to figure out on how to log it off.

It's sad I have to create a fake visitor account. I try to make it convenient but without guest account, I will have to add a sticky to my laptop. And that's more of a threat than the reason they choose not to have a guest account option.

Having a simple Guest Account is important, to separate it from the login account.  It would had been thoughtful if MS went ahead and did their family  E-mail, name, code thing -- and still allow the flexibility of adding the simple Guest Account.  I have various people from time to time, who use my computer with printer.  It would be insane for me to have 5-6 different confusing accounts to deal with.  I want for the system to work for me, not me having to work the system.  I hope a people oriented IT person who reads this will take this into consideration.

I appreciate the opportunity, created by MS, to make these comments.  Thank you. -- Pierre 8-2-15