I am getting a lot of "Are you trying to sign in?" messages

Unrequested “Are you trying to sign in?” prompts usually mean someone is repeatedly trying to access the account, or has entered the email/phone by mistake.

If an unrequested prompt appears, always select Deny. Without the correct response and explicit approval, the account remains safe, even if attackers know the password.

If one of these prompts is accidentally approved, treat it as a potential account compromise and immediately:

1. Go to the Microsoft account Security basics page and sign in.
2. Review the Recent activity for unfamiliar sign-ins and mark anything suspicious as This wasn’t me or Secure your account.
3. Change the account password to a strong, unique one.
4. Ensure multi-factor authentication is enabled and security info (phone, alternate email, authenticator app) is up to date.

To further secure the account and handle the frequent prompts:

1. Regularly review sign-in activity (location, device, browser) and don’t rely only on the location, as mobile IPs can appear from other regions.
2. Keep multifactor authentication turned on everywhere possible. It blocks most password-based attacks, because attackers usually don’t have the second factor.
3. If unusual sign-in alerts continue and suspicious activity is found, follow the guidance to secure the account and, if necessary, recover it using the documented account recovery steps.

References:

• Using Outlook mobile to sign in
• What happens if there's an unusual sign-in to your account
• View your work or school account sign-in activity from My Sign-ins
• The keys to the kingdom - securing your devices and accounts