Managing personal Outlook.com account settings, security, and privacy
Hi,
The system has detected unusual login attempts on your account and has temporarily blocked it to protect your security. In most cases, the block will automatically expire after 24 hours of no further sign in attempts. After that, you should be able to log in normally.
If the issue continues, your last option is to complete the account recovery form to verify your identity: https://account.live.com/acsr
Microsoft takes account security seriously, so the recovery process is fully automated to prevent unauthorized access. Complete the form using a device and location you've used before, and make sure to provide an accessible email address.
Microsoft typically reviews recovery requests within 24 hours. If your request is successful, they’ll send instructions to help you recover your account.
Help with the Microsoft account recovery form: https://support.microsoft.com/account-billing/help-with-the-microsoft-account-recovery-form-b19c02d1-a782-dee6-93c3-dc8113b20c42
You can submit the form up to twice within a 24-hour period, so feel free to include any new details you remember each time until you recover your account.
If the issue persists, let Microsoft know by filling out the reinstatement form here: https://www.microsoft.com/concern/AccountReinstatement
Note: This is different from the account recovery form.
Microsoft Team will review the reason your account was locked. If they determine that you are the rightful owner, they will reinstate your account. Please note that they typically respond within 48 to 72 hours. Be sure to check your junk and spam folders for their response.