If you've forgotten your Microsoft Office 365 password, you can easily reset it. Start by going to https://portalofficecom.com/ and clicking on "Can’t access your account?" You'll be prompted to enter your email address and follow the security verification steps. Microsoft may send a code to your registered email or phone number. Once verified, you'll be able to set a new password. After resetting, return to portal.office.com and log in using your updated credentials. This process ensures secure access to your Office 365 account, protecting your data and work files.