Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Follow these steps depending on how Office was originally set up on the laptop.
Option 1 – Office tied to a Microsoft account (most common)
If Office was activated with a Microsoft account when the laptop was first used:
- Go to the Microsoft account dashboard and select Sign in.
- Sign in with the same Microsoft account that was used to set up or activate Office/Microsoft 365 on this laptop.
- Select the Subscriptions icon in the left pane.
- On the Subscriptions page:
- If using an Office one-time purchase (perpetual license): under Products you've purchased, find the same Office product name and select Install.
- If using a Microsoft 365 Personal subscription: select Install Microsoft 365 in the upper-right.
- In the Install Microsoft 365 dialog:
- Choose the language.
- Choose the bit version (32-bit or 64-bit), then select Install.
- An installer (for example,
OfficeSetup.exe) will download. Run it and follow the prompts. - When installation finishes, open Word or Excel while connected to the internet.
- If prompted, sign in with the same Microsoft account to activate. Accept the license terms.
If a slower or offline-friendly method is needed, use the Offline installer from the same Subscriptions page by choosing Offline installer under Choose a version, downloading the .img file, mounting it, and running Setup32.exe or Setup64.exe from the Office folder.
Option 2 – Office preinstalled and activated without a Microsoft account
If the device came with Office 2021 preinstalled that did not require a product key or Microsoft account during activation, reinstall from Microsoft Store:
- Select Start and open the Microsoft Store app.
- In Microsoft Store, select the Library icon.
- Go to the Apps tab (or All tab if shown).
- Turn off Show installed products only under Sort and filter (skip if using All tab).
- In the list, find the Office product and select the cloud button.
- The Office installer will download and start. Follow the prompts to complete installation.
After installation, open any Office app while connected to the internet to complete activation.
References:
- Reinstall Office from the Microsoft Store app
- Reinstall Office or Microsoft 365 in your Office Pre-installed PC (for personal)
- Set up your Surface after service
- How to reinstall Office & Student 2019 - Microsoft Q&A
- How can I install Home Office 2024 with my Microsoft Account with your directions. - Microsoft Q&A
- I just bought Office for Home and Business and now "No license found" - Microsoft Q&A
- move microsoft 360 to new computer - Microsoft Q&A