“Microsoft Account Suddenly Says ‘Account Doesn’t Exist’ After Email/Sign-in Changes – Unable to Recover My Account”

Microsoft Account Says “Account Doesn’t Exist”, But New Sign-Up Says “Already Exists” – Recovery Form Also Not Working

Hello Microsoft Community,

I need urgent help recovering my Microsoft account. I have already tried every available recovery method, including trying from different devices and browsers, but I am getting the same issue everywhere.

My original Microsoft account was associated with my Gmail address. I am not posting the full email address publicly for privacy reasons.

The problem

When I try to sign in with my original email address, Microsoft says:

“That Microsoft account doesn’t exist.”

I have tried this multiple times and also tried from different devices, but the result is the same.

The confusing part is that when I try to use the same email address to create/sign up for a new Microsoft account, Microsoft says:

“This email address is already a Microsoft account.”

So Microsoft is simultaneously treating the email address as non-existent when I try to sign in, while saying that the same email address already exists when I try to create an account.

Recovery form is also not working

I also tried the Microsoft account recovery form.

However, I cannot successfully submit the recovery form because when I enter my original email address, Microsoft again says that the account already exists, and the form does not proceed/submit properly.

More importantly, during the recovery process I am being shown a recovery email address that I do not recognize and that does not belong to me.

This makes me concerned that the security/recovery information associated with my account may have been changed.

I have proof of ownership

The Microsoft account was used for my Microsoft Office 2021 purchase and activation.

I still have:

The original Microsoft Office 2021 purchase receipt

The original 25-character product key

The original purchase email that was sent to my email address

My Office 2021 installation was associated with this Microsoft account, so I have genuine purchase information that may help Microsoft verify ownership.

I am willing to provide the receipt and product key through an official and secure Microsoft Support channel. I will not post the product key publicly.

What I have already tried

I have already tried:

Signing in from different devices

Trying different browsers

Microsoft Sign-in Helper

Account recovery process

The account recovery form

Trying the process multiple times

But every method leads to the same contradiction: “Account doesn't exist”, while attempting to create a new account with the same email says “Already exists.”

I am completely stuck at this point.

I have tried the available Microsoft support/recovery options multiple times, but I keep getting redirected to the same recovery process, which itself is not allowing me to submit the form successfully.

Please help me understand what is happening to my Microsoft account and how I can contact the appropriate Microsoft Account Support team for manual verification/recovery.

I have valid purchase documentation for Office 2021 and can provide it through a secure official channel if required.

Thank you.