@QuickMailChecker_bot

Becca Pounding 0 Reputation points
2026-08-19T15:25:06.9933333+00:00

Hi,

My account has been taken over by the **@QuickMailChecker_bot. Ive reset my password multiple times, removed two apps i didnt install and im still getting emails with that on it.

Ive checked the rules section, there are no rules set. I have no apps connected with this email.**

**
The language also keeps changing to Vietnamese.

Any help would be appreciated**

Outlook | Web | Outlook.com | Account management, security, and privacy
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  1. SD - IA 179.4K Reputation points Independent Advisor
    2026-08-20T14:17:57.53+00:00

    Thank you, Becca.

    Was there any Teams account organizer there?

    Have you checked the contacts, and the to-do lists specifically?

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  2. SD - IA 179.4K Reputation points Independent Advisor
    2026-08-19T16:55:40.11+00:00

    Hi,

    The symptoms point that your account was hacked, and the hackers probably added your account to an organisation.

    1. Go to https://account.microsoft.com and sign in with your Microsoft account.
    2. Change the password
      • Select Security.
        • Click Password security.
          • Enter your current password.
            • Enter and confirm the new password.
              • Select Save.
              1. Sign out everywhere
                • Open Security → Advanced security options.
                  • Scroll to Sign me out.
                    • Select Sign me out everywhere to end all active sessions on devices and browsers.
                    1. Enable two-factor authentication (2FA)
                      • Go to Security → Advanced security options.
                        • Find Two-step verification.
                          • Select Turn on.
                            • Follow the prompts to add a verification method such as the **Microsoft Authenticator app, phone number, or email.
                              • Complete the setup to activate two-step verification.

    #2: Consider checking the following guide:

    https://www.yourwindowsguide.com/2026/02/outlook-hacked-draft-email.html

    #3:

    You can also try to leave the Guest account using Teams and see if that helps.

    If you want to remove the Guest account, you can open the Teams App > Settings > Accounts and Orgs. Click the button to leave the organisation.

    User's image

    I hope this information helps. If you have any more questions, don't hesitate to reach out.

    Otherwise, please take a moment to rate the answer. Wishing you good luck!

    A Windows MVP writes content on the above website, so it is safe. However, do watch out for the ads. It should translate into your Browser language automatically.

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  3. AI answer

    2026-08-19T15:25:24.73+00:00

    This pattern matches a compromised Outlook.com / Microsoft account. Since the password has already been reset, the next priority is to remove any remaining access and check account settings that attackers commonly change.

    1. Start the Microsoft compromised-account recovery flow: Start. It can guide to self-help steps or offer the chance to talk to an agent.
    2. Before changing the password again, run a full malware scan on the PC:
      • Open Windows Security
      • Go to Virus and threat protection
      • Select Scan options > Full scan > Scan now This matters because if a device is infected, the attacker can regain access after each password reset.
    3. Change or reset the password again after the scan completes.
    4. Review Outlook.com settings for persistence:
      • Rules: confirm nothing is present
      • Forwarding and automatic replies: remove anything not created intentionally
      • Connected accounts: remove anything unfamiliar
    5. Check the Microsoft account for other changes:
      • Review recent activity and confirm any sign-ins that were not legitimate
      • If the account language keeps changing, change it back in Outlook.com settings, then continue securing the account because repeated language changes usually indicate someone still has access
    6. If access is still being retained, use Sign out everywhere. Microsoft Q&A guidance notes this can take up to 24 hours to fully apply.
    7. If the account is blocked because of unusual activity, use the Sign-in Helper.
    8. If security codes or password reset still do not work, use When you can't sign in to your Microsoft account or Contact support.

    Also verify mailbox capacity. If the Outlook.com mailbox or OneDrive storage is full, sending and receiving mail can be affected.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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