Hello, thank you for reaching out to Microsoft Q&A.
Have you checked your Microsoft account's recent activity page to see if there's any unusual activity on your account?
To check this, you can log in to your account on the Recent Activity page here: https://account.live.com/Activity
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Do you have a VPN enabled when accessing Microsoft services like OneDrive or Outlook? You may also receive this error if Microsoft servers detect that you're accessing from a different region or location. For security reasons, your account may be blocked.
For now, please do not try to sign in with your Microsoft account or reset your password. Wait 24 hours (a cool-down period), then try signing in to your account again.
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If you can't log in, (temporary workaround)
On the password entry screen, select "Other ways to sign in" and use one of your alternative security contact methods, such as your phone number or email address, to verify your identity and see if you can log in successfully.
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If you can log in,
Go to your security settings page here and log in - https://account.live.com/proofs/Manage
Make sure you have two-step verification enabled on your Microsoft account.
(Check if you have at least three security verification methods active to verify your identity)