How to activate Office 2021 or 2019 correctly and without problems

7 October 2025
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If you're looking for a way to properly activate Office 2019 or 2021, you've come to the right place. Many users encounter difficulty activating their Office copy after installing it, which can result in some features being disabled or annoying activation messages appearing. In this article, I'll guide you step-by-step through the correct way to activate Office 2019 and also Office 2021, ensuring that the copy is genuine and secure, so you can work without problems.


What is the difference between Office 2019 and Office 2021?


Before talking about activation, it is important to know the difference between the two versions:

  • Office 2019 : A fixed version that doesn't require constant updates, suitable for users who prefer to pay once and get the full version.
  • Office 2021 : A newer version with some new features, such as support for team collaboration and improvements to Excel and PowerPoint, but it also requires activation to ensure access to all features.

Why do you need to activate Office?


Activating Office guarantees you:

  1. Use all features without restrictions.
  2. Get official updates from Microsoft.
  3. Avoid annoying reminders every day.
  4. Protect your device from unofficial or pirated versions that may carry viruses.


How to properly activate Office 2019 or 2021


1. Ensure the installed version of Office

The first step is to find out which version of Office you have:

  • Open any Office program (such as Word or Excel).
  • Go to File > Account .
  • There you will find the version number and full version of the product.


2. Use the official activation key.

The safest way to activate Office 2019 or 2021 is to use an official product key . You can purchase an original key from the Digital House Store here to guarantee Office 2019 activation.


3. Activation steps:

  • Open any Office program.
  • Click File > Account > Change Product Key .
  • Enter the activation key you obtained from the Digital House Store .
  • Click Activate and wait a few minutes for the key to be verified.


4. Activate Office online

Some versions may require direct online activation:

  • Make sure your device is connected to the Internet.
  • Open any office program.
  • Enter the key and follow the on-screen instructions to confirm activation.


5. Solutions to common activation problems

  • "This product is not activated" message appears : Make sure the key is valid and matches your version.
  • Key only partially works : This may be associated with a different version of Office. Use the correct product key.
  • Online activation errors : Check your internet connection or use phone activation if necessary.
Tip: Always make sure to purchase the key from a trusted source like the Digital House Store to avoid counterfeit copies.

Why choose the Digital House Store to activate Office 2019?


  • All keys are 100% original.
  • Live technical support to solve any problem during activation.
  • Reasonable prices for all users.
  • Instant email delivery without having to wait.


Conclusion:


Properly activating Office 2019 or 2021 ensures you benefit from all features and avoid future problems. Using an original product key from the Digital House Store, you can safely and easily activate your version in minutes. Don't waste your time with pirated copies or unofficial methods; invest in an original version to keep your device and files safe.