Resetting Your Office 365 Password
After logging in to your Office 365 account click on the settings cog in the top right-hand corner and select ‘Office 365 settings’:
Next, Click on ‘Password’:
Now simply enter your old password, your new password and then your new password again. Remember to make sure your new password complies with any password rules detailed at the top of the page.
If you have forgotten your password contact your Office 365 admin, who will be able to reset it for you, or use the ‘Can’t access your account?’ button on the Office 365 login page and follow the instructions.
Remember - any devices which use this password (eg email accounts on smartphones) will need this new password entering in to them!