cannot log in to my account

Action Constructing 0 Βαθμοί φήμης
2026-10-22T10:17:49.9766667+00:00

Hello,

On 10/16/2026, I purchased a Microsoft Teams Essentials subscription. During registration, a business account with a username ending in onmicrosoft.com was created. The first time, I managed to log in. After that however, I am unable to log in because I receive an error message stating that this username does not exist.

My card is currently being charged, but I cannot log in to use the service or cancel my subscription. The automated support systems (both phone and website) are blocking me because they do not recognize my email address.

How to locate the account using my payment card details, or proceed with the immediate cancellation of the subscription?

P.S. When I created the account, I received e-mails from Microsoft for the payment I had done, as well as with the username I could use.

Sincerely, [Moderator note: Personally Identifiable Information removed]

Microsoft Teams | Microsoft Teams για επιχειρήσεις | Εγγραφή και σύνδεση | Είσοδος
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  1. Nam-D 4,760 Βαθμοί φήμης Εξωτερικό προσωπικό της Microsoft Επόπτης
    2026-10-22T14:20:07.07+00:00

    Disclaimer: Since you are using English in the el-GR forum, I will respond in English as well. If you prefer Greek, please let me know.

    Greeting,

    Thank you for raising this concern on Microsoft Community.

    Have you previously changed the UPN(User Principle Name)?

    Did you call a phone number listed here: Contact Microsoft customer support | Microsoft Support

    In the meantime, please try these steps:

    1. Open an InPrivate or Incognito browser window and try signing in again.
    2. Clear the browser cookies and cached credentials related to Microsoft 365.
    3. Try signing in from a different browser. Sometimes, browser settings or cached data can interfere with login attempts.
    4. Try signing in from a different device, you can successfully sign in another device or sign in on the web then we can scope down that issue is from your current computer.

    After trying the above steps, please let me know if the issue is still the same for further support.

    Kindly let me know if this has been helpful to you. 

    Ήταν χρήσιμη αυτή η απάντηση;


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