Hi PadmanabhanMuthusami,
Thank you for reaching out.
I’m Mel, an Outlook.com user and Independent Advisor. I'd be glad to help.
If someone keeps trying to request a password reset, your email address can be fetched by malware, phishing emails, or attacking Internet sites.
Run anti-virus/anti-malware scans on your computer. Make sure not to post your email address publicly or subscribe to suspicious web pages.
Those request can be annoying, but it's not something that will compromise your account right away. No worries, as long as the person who's trying to reset your password doesn't have access to the requested security code or to your account password, they can't change your password or access your account.
You also have an option to change the alternate email address associated to your account so they can't use your alternate email account to send a password reset request and also for you to stop receiving their request.
Also, I strongly recommended to turn on the two-step authentication in your account and then change to a strong password again. For information about the two-step authentication, you may refer to this link:
https://support.microsoft.com/en-us/help/12408/...
Refer to the link below and perform the tips on how to help keep your Microsoft account safe and secure:
https://support.microsoft.com/en-us/help/12410/...
Let me know if you have further concerns.
Stay safe and healthy. Have a great day!
Kind regards,
Mel