Answers to top Office 365 questions

Get answers to the top questions that Office 365 users and admins are asking today.

Office 365 for home

You can install Office on your Mac or PC if you have a subscription to Office 365 Home, Personal, or University, or if someone has shared a subscription with you.

Install Office on your PC or Mac

In order to install or reinstall Office, or manage your Office 365 subscription, you need to sign in with the Microsoft account that's associated with the version of Office you have. The following article will help you find the Microsoft account that you associated with Office.

I can't remember the Microsoft account I use with Office

You don’t always need a product key to install Office, but when you do, the steps for finding it differ depending on what version of Office you’re installing.

For help finding your product key, select your version of Office:

You can renew Office 365 online through Microsoft, or buy another year of the subscription from a retail store.

Renew Office 365

If you're in the middle of your Office 365 trial, you can cancel your trial online before your trial period ends.

Cancel Office 365

Office 365 Home can be shared with up to four people in your household. You and the people you share with can install Office desktop applications on up to 5 computers, which can be a combination of Macs and PCs, 5 tablets, and 5 smartphones. If you've used up all of your available installs and need to install on another computer, you can free one up by deactivating one of your existing installs. You can also stop sharing your subscription with someone.

Share your Office 365 Home subscription with up to four people

Deactivate an Office 365 Home, Personal, or University install

Stop sharing an Office 365 Home subscription

Office 365 for business

If you can’t sync files between your computer and OneDrive for Business, it might be due to problems with the OneDrive for business sync client. We recommend you try the Next Generation Sync Client.

Get started with the OneDrive for Business Next Generation Sync Client in Windows

Get started with the OneDrive for Business Next Generation Sync Client on Mac OS X

Fix OneDrive sync problems with Windows 10, Windows 8, Windows 7, or Windows Vista

Fix OneDrive sync problems on a Mac

If you can't connect to your mailbox, are continually asked for a password, see invalid license errors, or Outlook won't let you create a new profile, click one of the links below and sign in with your work or school account to let us try to fix the problems for you.

Fix Outlook account problems in Office 365 (English only)

Download Support and Recovery Assistant for Office 365

Outlook email setup

If your work or school has an Office 365 subscription that includes the Office desktop applications, you can install them after signing in to Office 365 in your browser.

Install Office on your PC or Mac

Still need help?

Contact support

For home

For business (Office 365 admins only)

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