Managing personal Outlook.com account settings, security, and privacy
Hello Diego C,
Welcome to Microsoft Community.
I am a Microsoft user just like you, I hope you are doing well.
CAPTCHA is a security feature that requires you to prove that you are human by completing a series of puzzle.
I will suggest you try using a different browser or device and a different network to check if the experience remains the same.
Please let me know if you need more assistance.
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Warm Regards