SMS/MFA blocked by Microsoft Phone Reputation Service ,Account Safety Team confirmed no compromise (SIR23593879) , need backend unblock

Diogo Monteiro 0 Reputation points
2026-05-21T09:06:02.2+00:00

I am writing this post after days of failed support interactions, hoping to reach someone with backend access to resolve a technical authentication failure.

SITUATION SUMMARY

I have been locked out of my primary Microsoft account since Friday due to a technical SMS/MFA failure. This is NOT an ownership dispute , Microsoft's own Account Safety Team investigated the account and formally confirmed:

  • The account was NOT compromised
  • The account was NOT hacked
  • No malicious activity was detected

THE TECHNICAL PROBLEM

Based on my research on this forum, I believe my phone number has been flagged by Microsoft's Phone Reputation Service. Every login attempt fails with:

  • "Try another verification method"
  • "This method is not working right now"

Xbox Support confirmed a 7-day cooldown on the account. However, I have seen cases on this forum where Microsoft engineers unblocked accounts directly from the backend and cleared the bad reputation flag. That is exactly what I am requesting.

WHAT I HAVE ALREADY DONE

  • Account Safety Team investigation completed with formal SIR case number
  • Multiple ACSR recovery forms submitted
  • Account Reinstatement forms submitted
  • Xbox Support contacted , confirmed 7-day cooldown, no manual override available at their level

OWNERSHIP EVIDENCE AVAILABLE

  • 5 years of consistent access from the same device and IP location
  • Physical possession of the iPhone associated with the MFA number
  • Passkey removed from the associated iPhone on 15th May ,verifiable in Microsoft logs
  • Xbox Gamertag with purchase history dating back to 2018
  • Game Pass subscription with exact dates
  • Recent game activation with gameplay sessions verifiable on Microsoft servers from last week
  • Windows device name and ID associated with the account
  • Previous passwords, date of birth and postal code available

SPECIFIC REQUEST

I am not asking for a bypass of security. I am asking for the same backend intervention seen in identical cases on this forum specifically: clearing the Phone Reputation flag and manually resetting the SMS/MFA block, given that ownership has already been formally confirmed by the Account Safety Team.

All case reference numbers available via private message.

I am available immediately for any additional verification required.

Thank you.

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  1. AI answer

    2026-05-21T09:06:22.4066667+00:00

    The symptoms described match a phone number or sign-in method that has been blocked by Microsoft’s risk and reputation systems, which results in errors like “Try another verification method” and prevents SMS codes from being sent.

    From the available information, there is no self-service or community-forum action that can clear a bad-reputation flag or unblock MFA/SMS at the backend. In similar cases, resolution has required direct Microsoft support intervention and escalation to internal data or protection teams:

    1. For Azure/Microsoft Entra/MFA scenarios where a phone number was blocked with a “bad reputation” flag (for example, error 399287), the resolution was:
      • The Microsoft Data team reset MFA and cleared the block on the backend.
    2. For tenant or admin lockout scenarios (no other admin able to reset MFA), the resolution was:
      • Opening a support ticket and having the Data Protection team restore access and reset MFA from the backend.
    3. For blocked accounts or fraud-alert-related MFA blocks in Microsoft 365/Entra, the documented guidance is:
      • Use the official “Report suspicious activity” and MFA support paths, and if MFA is enabled through Microsoft 365, submit a support request with Microsoft to unblock the account.

    Given that:

    • The account safety investigation is already complete and confirmed no compromise.
    • SMS/MFA is blocked by reputation/anti-abuse systems.
    • Frontline support (e.g., Xbox Support) has confirmed a cooldown but cannot override it.

    The only supported path to clear the phone reputation flag and reset the MFA/SMS block is:

    1. Open or update a formal support ticket tied to the affected account/tenant.
    2. Provide the existing SIR/case numbers and clearly state that:
      • Ownership and non-compromise have already been confirmed by the Account Safety Team.
      • The issue is a technical MFA/SMS block (phone reputation / risk-based block), not an ownership dispute.
    3. Ask for escalation specifically to the internal Data/Data Protection team or the team that handles MFA and reputation-based blocks, referencing that similar cases were resolved by a backend MFA reset and unblock.
    4. If the scenario involves Microsoft 365/Entra MFA, follow the documented guidance to submit a support request to unblock MFA.

    Community responders and forum moderators cannot access backend systems to clear reputation flags or reset MFA; only Microsoft’s internal support and data protection teams can perform that action once identity and account safety checks are satisfied.

    References:

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

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