Windows 10: Windows 10 says Microsoft Account doesn't Exist that does exist

Windows 10 will not let me add a user with this Microsoft account that I am using to ask this question. It says this account doesn't exist. It is tied to an organization and my phone number which it also says is not tied to a microsoft account when I try the number as well. Help please!

:)

 

Strange Windows 10 User Account issue.

Unfortunately I had done those steps numerous reboots, it just, reappears for no good reason. The base account isn't even a Microsoft account, it's a local account.

I haven't quite tried the built in administrator account on W10, but so far in my experience on my own computer, the built in account seemed to have absolutely no more control than I did on my own.

It's just strange, I go in, it warns me twice about deleting the account, then it's gone. Reboot, and it's back?

EDIT: Just to specify, both command line and Netplwiz both say only HIS account exists on the computer, it doesn't list this rogue account. This is what I meant in my first post about the fact that even Windows doesn't seem to believe it exists, HALF the time. *Frown

 

Microsoft Teredo Tunelling Adapter doesn´t exist

My teredo tunneling adapter is non-existant on my pc, I´ve tried adding it by legacy hardware but it wasn´t there, I've set DisabledComponents to 0, it doesn´t show up when i view hidden devices and there´s no download for this driver apparently, I´ve
tried a lot of solutions and nothing has worked for me.

Please help me, i can´t play multiplayer games with my friends and neither use party chat on the Xbox App.

 

That Microsoft account doesn't exist

Yes it's another "That Microsoft account doesn't exist" question.

I'm literally logged into this forum with this account.

I'm trying to set up a new laptop, it's asking me to sign in with Microsoft then saying "That Microsoft account doesn't exist"

No it's not an alias