This guide will go over how to make Proofpoint use your Microsoft 365 email and password so you don't have to remember a separate Proofpoint password. This is highly recommended to do.
- Click here to go to the Proofpoint login Page.
- Under Or log in with click Office 365 Account. The link will redirect you to a Microsoft account login page.

- Enter your O365 credentials.
- If successful, login will redirect you back to Proofpoint Essentials and you will be automatically signed into your account.
Then moving forward you can just click on the Office 365 Account login button.