If you've forgotten your Microsoft Office 365 password, you can easily reset it. Start by going to portal.office.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.