If you get an email about unusual activity on your Microsoft account, or if you’re worried that someone else might have used your account, go to the Recent activity page. You’ll see when your Microsoft account was signed in during the last 30 days, along with any device or app-specific info.

Manage email accounts in Outlook.com. Unblock my Outlook.com account. Supported browsers for Outlook on the web and Outlook.com. If you sign in with a work or school account, read How to sign in to Outlook on the web.

If you can't sign in to your Outlook.com, Hotmail, Live, or MSN email account, or you're not sure how to sign in or sign out, here are some solutions.

You can view all of your recent work or school account sign-in activity, from the My sign-ins page of the My Account portal. Reviewing your sign-in history helps you to check for unusual activity by helping you to see:

On the View tab, select View settings > Accounts > Email accounts. In the Email accounts section, find the account you want to delete. Beside the account name, select Manage. Under Account details, select Remove to remove this account from Outlook.

Use an add-in while composing a message. Create a new message or reply to an existing one. From the ribbon, select the Message tab, then choose the add-in you want to use. If the add-in doesn’t appear in the ribbon, select Apps to view your installed add-ins.

Add-ins in Outlook.com are programs or utilities that help you automate tasks when you view or create messages. Microsoft has partnered with leading companies to build add-ins that help you get things done right from your inbox.

When you select the Import Settings option during setup, the web add-in counterparts of your existing COM add-ins in classic Outlook for Windows are installed in the new client. The following table lists the applicable COM add-ins and their web add-in counterparts.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Outlook add-ins provide solutions to help you better interact with Outlook and complete tasks on your messages and appointments without leaving Outlook. Install an add-in from AppSource. From the Tools menu on the ribbon in Outlook, select Get Add-ins. The AppSource page opens in your default browser.