When you subscribe to Microsoft 365, you will be prompted to sign in to use Office after installation or after signing out. There is a sign-in limit in your subscription that determines how many Office installations you can sign in to at one time. Use the tabs below to select the subscription type and learn more about the sign-in restrictions for your subscription.
With Microsoft 365, you can install Office on all of your devices and be logged in to Office on five devices at the same time. This includes any combination of PCs, Macs, tablets and smartphones.
What you need to know
Below are some tips for using Microsoft 365 on multiple devices:
Each person using Office on a device must have an account associated with Microsoft 365. This can be the account that subscribes to Microsoft 365 or accounts that share a Microsoft 365 Family subscription.
When you install Office on a device, you are prompted to sign in the first time you launch an Office app.
Office remains activated as long as you are logged in. When you sign out, your account license is removed and the APP is disabled. You can view and print files, but not create or edit them.
To activate Office after you sign out, you can sign in again with the account associated with your subscription.
If you have more than five devices, Office will automatically sign you out of devices to keep you within your sign-in limit. If you want to use Office again on a device you’ve been signed out of, simply sign in again.
Frequently asked questions
I have signed in. Should I stay logged in?
We recommend staying signed in to Office to keep your apps enabled.
What happens when I sign out of Office?
When you sign out, your apps will be deactivated. You can view and print files, but not create or edit them until you sign in again. For more information, see What happens when I sign out of Office.
How does the sign-in work when sharing Microsoft 365 Family??
You can share your Microsoft 365 Family subscription with up to five other people. Each person uses their own Microsoft account to install Office on all their devices, and can be logged into five at the same time.
Can other people log in to Office on my device?
If a person logs into Office on your device without a subscription, they can view and print files, but not create or edit files. If you have Microsoft 365 Family, you can share your subscription with five other people. Any person can sign into Office with their own Microsoft account on your device to create and edit their own files.
With Microsoft 365, you can install Office on 5 PCs or Mac computers, 5 tablets, and 5 smartphones, and sign in to Office.
Here’s what you need to know
Below are some tips for using Microsoft 365 on multiple devices:
If you sign up for Windows with your business or school account, you’ll automatically be signed up for Office. For Macs and mobile devices, sign in with your business or school account to activate Office.
Office remains activated as long as you are signed in. When you sign out, your apps are disabled. You can view and print files, but not create or edit them until you log back in.
You are automatically logged out of devices by Office so that you stay within your logon limit. If you want to use Office again on a device you’ve been signed out of, just sign in again.
Frequently asked questions
I have signed up. Should I stay signed in?
We recommend staying signed in to Office to keep your apps enabled.
What happens when I sign out of Office?
When you log out, your apps are disabled. You can view and print files, but not create or edit them until you sign in again.