Portal.office.com login to Office 365, though my personal favourite is via https://portal.office.com. Because that takes you to your Office 365 Portal and you can get to everything from here.

What is the Office 365 Portal and Why Use It?

If you are an employee of University of Maryland, Baltimore, you have access to Office 365. Office 365 provides all the standard Office apps (email, calendar, Word, Excel, PowerPoint, and OneDrive) in a cloud environment — which means you can access your data (email, calendar, files, etc.) from anywhere that you have a device and internet access.

How do you access all of these items from anywhere?

That’s where the Office 365 portal comes in. When you are away from your workstation, the Office 365 portal is the tool that allows you to access email, calendar, and files saved to OneDrive for Business. The portal also offers online versions of Word, Excel, and PowerPoint, which allows for quick and easy viewing and editing of files. If you’re at a meeting across campus, at home, traveling for work — whatever the scenario — use the Office 365 portal to access your email or files.

How to access the Portal?

From any web browser, to go the Microsoft Office 365 home page. You will be prompted to enter your UMB e-mail and password.

If you are off-campus, there is a new security step called Multi-Factor Authentication (MFA). MFA requires another device (smartphone or landline) to authenticate that you are who you say you are by sending what is called a “Push” or a pass code. Once this step is completed, you will be taken to your Office 365 portal home page.