How to Reactivate Microsoft Office Home & Student After BIOS Update
Question details
The user needs to recover and reactivate their Microsoft Office Home & Student license after it disappeared or showed an error following a system BIOS update.

- Product
- Microsoft Office Home & Student
- Device & OS
- Windows
- Scenario
- Updating the computer's BIOS, which Windows or Office recognizes as a major hardware change.
- Observed behavior
- The Microsoft Office license disappears or displays an activation error stating the maximum number of activations has been reached.
Ensure you have the login credentials for the Microsoft account originally associated with your Office purchase, and confirm your device has a stable internet connection before attempting reactivation.
Reinstall Office from Your Microsoft Account
Use this primary method if your Office installation was completely removed or requires a digital license refresh after the update.
Microsoft ties your digital Office license to your personal Microsoft account. Re-downloading the software from your account services page can often refresh the hardware signature and clear the activation block.
Open your web browser and navigate to https://account.microsoft.com/services. Sign in using the exact Microsoft account that you linked to Office Home & Student during your initial setup.
Scroll through the 'Services & subscriptions' section to locate your Office Home & Student purchase.
Click the 'Install' button next to your product and follow the on-screen prompts to download, reinstall, and automatically reactivate the software on your device.

Use Microsoft Telephone Activation
This is necessary if you receive an error indicating that the maximum number of activations has been reached due to the perceived hardware change.
Restore Windows to a Previous State
Revert your computer to a point before the BIOS update to temporarily bypass the activation issue.
Try WPS Office - No Complex Activation Hassles
Avoid frustrating license errors and hardware-locked activation limits caused by simple PC updates. WPS Office offers a free, highly compatible, and lightweight alternative to Microsoft Office that is incredibly easy to manage across all your devices.
- 1. Download the Installer: Visit the official WPS Office website and click 'Free Download' to get the lightweight installation file.
- 2. Install the Software: Run the downloaded file and follow the simple on-screen instructions to install WPS Office in seconds.
- 3. Open Your Files: Launch WPS Office to instantly open and edit your existing Microsoft Office documents without worrying about activation codes.

Frequently Asked Questions
Why did a BIOS update cause my Microsoft Office to deactivate?
Microsoft's activation servers track your device's unique hardware signature to prevent software piracy. A BIOS (Basic Input/Output System) update alters this signature, causing Office to incorrectly assume the software was moved to a completely new computer, thereby triggering an activation lock.
Can I reactivate a preinstalled Office version after a BIOS update?
If Office Home & Student came preinstalled on your PC (known as an OEM license), it is often tied directly to your computer's original hardware state. You may need to contact your PC manufacturer's customer support team to have the license properly restored.
What should I do if the automated telephone activation fails?
If the automated telephone system cannot verify your Installation ID, do not hang up. Wait on the line to be transferred to a live Microsoft Support agent. Explain that you simply performed a routine BIOS update, and they will manually generate a confirmation ID for you.
Will I lose my Word and Excel documents if I reinstall Office?
No, reinstalling Microsoft Office only replaces the core application files. All of your personal documents, spreadsheets, and presentations saved locally on your hard drive or in your OneDrive account will remain completely intact and unaffected.




