Windows 10: User name not shown in C:\Users

Since updating from Win 7 to Window 10 - I have 'lost' the appropriate user name in C:\users.
Therefore when trying to set 2 other computers to recognise this particular laptop is not possible. My account is Local, and the network is private.
A visit to C:\users shows the following..........
Default.migrated
DefaultAppPool
Public
User

Obviously I can see in UAC what the username is supposed to be, and I know the password - however inputting that info does not work. (The other 2 PC's run on Win 7.)
Your thoughts and help would be appreciated.

:)

 

What is the difference or relation between an user an account?

It's difficult to understand what you are asking.

You have 3 user accounts on the computer? And hence 3 subfolders within C:\Users\?

If your 3 user accounts are "local" accounts i.e. they exist on the computer only, the folder names within C:\Users\ will match the user names you see at the top of the Start menu [one user account name appears at the top and, if you click on it, all the
other user accounts will be listed underneath].

If any of your 3 user accounts are linked to inline Microsoft Accounts then their names in C:\Users\ and at the top of the Start menu should match, respectively, the full account name shown when you log in online to your MS Accounts and the email address
used for that MS Account. [Differences between these two ways of identifying MS Accounts might be what is causing your current problem]

Once this question is settled, I could ask why you want to delete a user. I don't see how doing so could correct any backup errors. But to stay with the question of user account identification a bit longer, the name used for any user account within backups
is most likely to be the full account name shown when you log in online to your MS Accounts.

 

I ca't download .exe files.

In Firefox in the upper right is a down arrow. Click on it and see if your files are shown. Also to install the file click on it.

Have you looked in the Download folder? In Quick Access or C:, Users, your user name, Downloads