Transfer Your Microsoft Office License to a New Device

Moving Microsoft Office to a new computer means signing out of your old device and signing into your new one using the same Microsoft account. The process takes about 10 minutes and works the same way whether you own Office outright (a one-time purchase) or subscribe to Microsoft 365 (a monthly or yearly plan). Your license stays tied to your Microsoft account, not to the computer itself, so you do not need to buy a new copy.

The steps differ slightly depending on whether you have a perpetual license (Office 2019, Office 2021, or Office Home & Student) or a subscription (Microsoft 365 Family, Microsoft 365 Personal, or Microsoft 365 for business). Both routes involve the same basic principle: deactivate on the old machine, then set up on the new one by signing in.

Key Takeaways

  • Your Microsoft Office license is attached to your Microsoft account, not your computer, so you move it by signing out on the old device and signing in on the new one.
  • You must first read and install Office on your new computer from office.com or the Microsoft Store before you can sign in.
  • Signing out on your old computer is optional but recommended to free up a license slot if you have a subscription with a device limit.
  • If you own a perpetual license (Office 2019 or 2021), you can install it on one computer at a time; if you have Microsoft 365, the number of devices depends on your plan.
  • Keep your Microsoft account password and recovery options up to date, because you will need them to sign in on the new computer.

Install Office on Your New Computer First

Before you can move your license, you need Office installed on the new machine. Go to office.com and sign in with the Microsoft account that owns your Office license. If you do not remember which account you used, check your old computer by opening any Office app, clicking your profile picture in the top right, and looking at the account name shown.

Once you are signed into office.com, look for a button labeled Install Office or Install apps. Click it, then select Microsoft 365 app or Office depending on what appears. A file called OfficeSetup.exe will read. Run this file and follow the on-screen prompts. Installation usually takes 5 to 15 minutes depending on your internet speed.

If you cannot find the install button on office.com, your account may not own an active license. Check your Microsoft account page at account.microsoft.com and look for a section called Services & subscriptions or Your products. If Office does not appear there, the license may have expired or been tied to a different account.

Sign Into Office on Your New Computer

After installation finishes, open any Office app—Word, Excel, PowerPoint, or Outlook. You will see a sign-in screen. Enter the email address and password for the Microsoft account that owns your Office license, then click Next. If you have two-factor authentication turned on (a security code sent to your phone or email), you will need to enter that code as well.

Once you sign in, Office will set up automatically. You should see a message saying your account is signed in, and the app will stop showing watermarks or limited-functionality warnings. This usually happens within a few seconds, but can take up to 24 hours in rare cases. If set up does not happen after a day, restart your computer and try opening Office again.

If you see an error message saying the account is already in use on too many devices, you have hit a device limit. Microsoft 365 Family allows up to 6 devices; Microsoft 365 Personal allows 1 device at a time; perpetual licenses (Office 2019, 2021) allow 1 device at a time. You will need to sign out on another device before you can set up on this one.

Sign Out of Office on Your Old Computer

Open any Office app on your old computer. Click your profile picture in the top right corner, then select Sign out. Confirm the action if prompted. This step is optional if you are throwing away or recycling the old computer, but it is important if you are selling it, giving it away, or keeping it for other uses.

Signing out removes your Microsoft account from that device and frees up a license slot if you have a subscription with a device limit. It does not uninstall Office—the apps will still be on the computer, but they will show a watermark and will not let you edit documents until someone signs in with an active license.

If you cannot access the old computer anymore (it is lost, broken, or already gone), you can remotely sign out through your Microsoft account. Go to account.microsoft.com, click Your info or Security, then look for a section called Recent activity or Devices. Find the old computer in the list and select Sign out or Remove. This can take a few hours to take effect.

Understand Your Device Limits and License Type

Microsoft Office comes in two forms: perpetual licenses and subscriptions. A perpetual license is a one-time purchase (Office 2019, Office 2021, Office Home & Student) that you own forever but can only install on one computer at a time. A subscription (Microsoft 365 Family, Microsoft 365 Personal, Microsoft 365 for business) renews monthly or yearly and lets you install on multiple devices depending on your plan.

Microsoft 365 Family allows installation on up to 6 devices and up to 6 people. Each person gets their own account and can sign in on their own devices. Microsoft 365 Personal allows installation on up to 5 devices, but only one person can use the account, so you cannot share it with family members. If you have a work or school account, your employer or school controls how many devices you can use.

To check which type you have, go to account.microsoft.com and look at your Services & subscriptions section. If it shows a renewal date coming up, you have a subscription. If it shows no renewal date or says "Purchased", you have a perpetual license.

Troubleshoot Common Transfer Problems

If Office says your account is not recognized or your license is not valid, the most common cause is signing in with the wrong Microsoft account. Check your old computer to confirm which account owns the license, then sign out on the new computer and sign in again with the correct account. If you have multiple Microsoft accounts, this mistake is straightforward to make.

If you see a message saying "This product key has already been used", you are trying to use a perpetual license on a second device while it is still active on the first one. Sign out on the old computer first, wait a few minutes, then try signing in on the new one. If the old computer is not accessible, use the remote sign-out method through your Microsoft account page.

If Office keeps asking you to sign in every time you open it, your sign-in did not stick. Try signing out completely (click your profile picture and select Sign out, then close the app), restart your computer, and sign in again. If this does not work, uninstall Office completely, restart, and reinstall it from office.com.

Move Your Files and Settings to the New Computer

Transferring your Office license is separate from moving your documents, email, and settings. Your Word documents, Excel spreadsheets, and Outlook emails are stored in different places depending on where you saved them. Documents you saved to OneDrive will appear automatically on your new computer once you sign in with the same Microsoft account—OneDrive syncs across devices.

Documents saved only to your old computer's hard drive will not move automatically. You can copy them manually by connecting an external drive, using cloud storage, or using Windows' built-in transfer tool. Outlook email and contacts are stored on Microsoft's servers if you use an Outlook.com, Hotmail, or Microsoft 365 email account, so they will appear when you sign in on the new computer. If you use a different email provider (Gmail, Yahoo), you may need to set up that account again in Outlook.

Your Office settings (like custom toolbars, AutoCorrect entries, and templates) are tied to your Microsoft account and will sync to the new computer automatically in most cases. If they do not appear after a few hours, you can manually copy them by finding your Office settings folder on the old computer and moving it to the new one, but this is rarely necessary.

Frequently Asked Questions

Can I install Office on more than one computer at the same time?

It depends on your license type. Microsoft 365 Family allows up to 6 devices; Microsoft 365 Personal allows up to 5 devices; perpetual licenses (Office 2019, 2021) allow only 1 device at a time. If you try to sign in on a second device with a perpetual license, you will need to sign out on the first device first.

What happens to my Office license if I do not sign out on the old computer?

If you have a subscription, the license stays active on both devices until you sign out on one of them or until your device limit is reached. If you have a perpetual license, Office will stop working on the new computer until you sign out on the old one. Signing out is free and takes 30 seconds.

Do I need to buy a new Office license for my new computer?

No. Your license is tied to your Microsoft account, not to the computer. As long as you sign in with the same account on the new computer, your license moves with you at no extra cost.

What if I forgot which Microsoft account owns my Office license?

Check your old computer by opening Word, Excel, or another Office app and clicking your profile picture in the top right. The account name shown there is the one that owns your license. You can also check office.com—try signing in with different accounts until you find the one that shows your Office license.

Can I transfer my Office license to someone else?

No. Your Office license is personal to your Microsoft account and cannot be transferred or sold. If you want someone else to use Office, they need their own license or their own subscription. Microsoft 365 Family is designed for families and allows up to 6 people to share one subscription.