How to Reinstall Office Professional Plus 2021 on a Replacement Laptop
Question details
The user needs to reinstall a retail version of Microsoft Office Professional Plus 2021 on a new replacement laptop after the original device was damaged.
- Product
- Microsoft Office Professional Plus 2021
- Device & OS
- not provided
- Scenario
- Transferring and reinstalling an Office software license to a replacement computer after hardware damage.
- Observed behavior
- The user needs to download, install, and successfully activate their existing Office 2021 retail license on a new machine.
Ensure you have access to the Microsoft account linked to your Office 2021 purchase or have your original 25-character product key available before starting the transfer process.
Reinstall and Activate via Your Microsoft Account
Use your linked Microsoft account to manage your devices, download the Office installer, and activate the software on the new laptop.
Retail licenses for Office Professional Plus 2021 are typically tied to your Microsoft account. Since the previous laptop is damaged, you may need to complete a telephone activation if the online activation detects the key is already in use.
Go to account.microsoft.com/services and sign in with the Microsoft account associated with your Office Professional Plus 2021 purchase.
Locate your Office 2021 purchase under the 'Products and subscriptions' section and click on 'Install'.
Run the downloaded setup file on your replacement laptop and follow the on-screen prompts to complete the installation.
Open any newly installed Office app (like Word). If prompted, sign in to activate. If online activation fails due to the previous install, select 'I want to activate the software by telephone' and explain to the support system that your previous device was destroyed.
Seek Support from the Microsoft Q&A Community
If you encounter activation limits or issues transferring the retail license, get official support to migrate your product key.
Try WPS Office: A Free and Lightweight Alternative
Having trouble transferring your Microsoft Office license? WPS Office is a completely free, lightweight alternative that requires no complex license transfers. It provides a familiar user interface and works seamlessly across your devices.
- 1. Download WPS Office: Visit the official WPS website and download the free installer for your new laptop.
- 2. Install the Software: Run the downloaded executable file and follow the on-screen instructions to complete the setup.
- 3. Open and Create: Launch WPS Office to instantly open your existing Microsoft Office files or create new documents without needing a paid license key.

Frequently Asked Questions
Can I use my Office Professional Plus 2021 product key on two computers at once?
No, retail licenses for Office Professional Plus 2021 are typically valid for one computer at a time. To install it on a new laptop, you must transfer the license from the old one.
What if I cannot deactivate Office on my broken laptop?
If the laptop is completely damaged and you cannot uninstall Office to deactivate it, you can still install the software on your new laptop. You will likely need to activate it via telephone and explain to the automated system or a support agent that the original hardware is destroyed.
How do I find my Office 2021 product key if I lost the email?
If you linked your Office 2021 purchase to a Microsoft account, the digital license is stored there. You can log into account.microsoft.com/services to download and install the software without needing to manually type the product key.




