Account does not exist despite working yesterday.

Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.

Hope you're doing great today JosephPaker

Sorry to hear that buddy,

As password reset link is not working for you, you can try filling the account recovery form to see if you Microsoft account is linked to a different email address and you didn't remember very well:
https://account.live.com/acsr

Also, you could try alternative methods to recover your account here:
https://support.microsoft.com/en-us/account-bil...

If you maybe think your account was compromised, you can try recover it following steps here:

https://support.microsoft.com/en-us/account-bil...

Hope it helps, if you have further questions feel free to ask
Greetings from another Microsoft user

The other strange thing is that we never received a notification email about password changes or any changes on the account which usually happens when the password is changed or other changes to the account is done.

Hi there! My name is Darhyl and I’d be more than happy to help you with your query.

I'm sorry you are experiencing this with your Microsoft account.

Based on the error message you provided, kindly try to perform the following workarounds according to this article for us to isolate the case: https://windowsreport.com/microsoft-account-doesnt-exist/

"1. Check if the account name was typed correctly.

It is possible sometimes that, the account name was misspelled. Double-check if you typed it incorrectly.
If the account name was typed correctly, maybe the email address is incorrect or has been changed recently.
Make sure that your email has the correct domain at the end: @gmail.com, @outlook.com, @live.com, etc.
Try to log in using your old email address or phone number if they were changed.

2. Find your account name from your Windows 10 PC or Xbox.

Click on the Start button on the left side of your Taskbar, and select Settings.
Head over to Accounts, then Email & accounts.
Check your Microsoft account names under Email & accounts.
Another method would be to open any Office 2016 or 2019 app and create a new document.
Click on the top left corner where it says File, then select Account.
You can see your Microsoft account name under User information or in the Product information section.
One last method would be to sign in to your email associated with your Microsoft account.
Then, check for previous emails from Microsoft.
The previous emails from Microsoft will show your account name.

3. Make sure you’re using the correct account type.

An account that your workplace or school provided may not have a Microsoft account associated with it. So, you might need to create a new Microsoft account.
Normal accounts can be used for logging in for one or more services, such as Outlook or Microsoft 365.

Work or school accounts, however, cannot be used to connect to other Microsoft services, such as Xbox. Additionally, an Xbox Gamertag cannot be used to sign in to a Microsoft account.

The only valid ways to sign in are by using an email address, a Skype ID, or a phone number registered to the account."

4. Your Microsoft account might have been compromised/hacked.

From the official Microsoft article: https://support.microsoft.com/en-us...-account-24ca907d-bcdf-a44b-4656-47f0cd89c245 try to follow the instructions in the interactive tool in order to recover your account.

Thank you for your kindness and understanding! Please feel free to let me know if you need anything else.

Best Regards,
Darhyl

As far as this comment goes

Another question would be whether you even migrated the account that had Minecraft to Microsoft.

Yes the account he has with Microsoft was migrated and working for approximately two years.

I have screen shots of the email address/username my sons account is now associated with and have the complete email address.

Hello again Linda, i'm sorry about what happened to your account, what may have happened is that the account was hacked, and as there was no phone or security email in the account the notifications were not sent.

If you try to fill out the form, he says the account doesn't exist, it's because it may have been deleted or even changed her name.

As this forum is public viewing and unfortunately as independent consultants we do not have access there is some data, to effectively clarify this issue, it is necessary that you contact Microsoft support directly via chat.