Can't log in to Outlook for 2 days straight, no 'fix' has worked!

Based on the symptoms ("too many attempts" even on correct password, 2FA SMS method unavailable, repeated failures over 2 days, and now being signed out on all devices except iPhone), the account is very likely in a temporarily blocked or protected state due to suspicious activity or repeated sign‑in/reset attempts.

Use the following steps, in order, and avoid repeated retries in between:

1. Stop trying to sign in for at least 24 hours
   From similar cases, repeated attempts can extend the lockout. The guidance is to:
   • Refrain from any sign‑in attempts for at least 24 hours (preferably a bit longer to be safe).
   • Do not keep retrying password or 2FA during this period.
2. While still signed in on iPhone: review and adjust sign‑in options
   Since access still exists on iPhone:
   • Go to the Microsoft account security/sign‑in settings from the signed‑in session.
   • Check if there is another way to sign in configured (alternate email, different phone, Microsoft Authenticator).
   • If possible, add or confirm additional sign‑in methods (e.g., another phone number, alternate email, or Authenticator app) so there is at least one working method besides the problematic SMS.
3. After the wait, try a different sign‑in method first
   When the 24+ hours have passed:
   • On the password page, check for an option like “Sign in with another method” or similar.
   • If available, choose a different verification method (email code, Authenticator, etc.) instead of the phone method that shows “this method is currently unavailable.”
4. If sign‑in still fails: treat it as a blocked Outlook.com account
   If after waiting and trying alternate methods the account still will not let you in or continues to behave as blocked:
   • Use the official Sign‑in Helper flow for blocked Outlook.com/Microsoft accounts: Sign-in Helper.
   • This is the supported path when Outlook.com detects unusual sign‑in activity and temporarily blocks the account.
5. If the account cannot be unblocked via Sign‑in Helper
   If unblocking fails (for example, codes cannot be entered or the system still refuses access):
   • Follow the guidance under “When you can't sign in to your Microsoft account” from the unblock article. This path helps with:
     • Resetting the password again (if needed).
     • Handling cases where password reset does not work.
     • Getting to a link to contact support for further review.
6. If the system indicates the account is blocked or access is restricted long‑term
   For cases where the account appears blocked for suspicious activity even after the above:
   • Fill out the Request for Account Reinstatement form referenced in the similar Q&A case. Provide as much accurate information as possible about the account and usage.
   • Continue to avoid repeated sign‑in attempts while waiting for the review.
7. If still stuck after all of the above
   • From the iPhone session (while it still works), back up any critical data that can be accessed (for example, attachments downloaded locally, important information copied out).
   • Use the support/contact options linked from the Outlook.com and Microsoft account help pages (for example, via Account & Billing Help or How to get Outlook.com support) to open a support request, selecting topics like “Password reset or account recovery” or “Outlook.com account blocked.”

Key points:

• Avoid further rapid sign‑in attempts; they can prolong the lock.
• Use the still‑signed‑in iPhone session to strengthen recovery options.
• Use Sign‑in Helper and, if needed, the Request for Account Reinstatement path if the account remains blocked.

References:

• Unblock my Outlook.com account
• I can't sign in to my Microsoft account
• Why can't I log in to my Outlook account? - Microsoft Q&A
• Can't sign in to my email - Microsoft Q&A
• Cant get into outlook - Microsoft Q&A
• Outlook.com address returning TooManyObjectsOpenedError - Microsoft Q&A
• Cannot log in Outlook. - Microsoft Q&A
• I can't send or receive messages in Outlook
• After I changed my primary alias on my outlook.com account, I can't log back in
• Can't sign in to Outlook with Outlook.com account