Look for the line showing the .
Here are the step-by-step methods to resolve the expiration error. Method 1: Activate with a Valid License Key
Before installing a new version, it is critical to perform a "clean" uninstall to prevent license conflicts. Standard Uninstall : Navigate to Settings > Apps > Apps & Features , find the preview version, and select Deep Clean : For persistent issues, use the Microsoft Support and Recovery Assistant (SaRA)
If this method is successful, you'll see a confirmation message, and the "Preview Expired" warning will disappear. Look for the line showing the
This method clears the expired license keys from your system’s registry and allows you to input a valid key.
The "preview has expired" issue in Microsoft Office LTSC Professional Plus 2021 can be fixed by activating a licensed version, converting to a permanent license, or uninstalling and reinstalling the software. By following the steps outlined in this paper, users can resolve the issue and continue using Office LTSC Professional Plus 2021.
Navigate to the Office folder: cd "\Program Files\Microsoft Office\Office16" Check current status: cscript ospp.vbs /dstatus Standard Uninstall : Navigate to Settings > Apps
The error occurs because preview builds of Microsoft Office LTSC 2021 are time‑limited. Once the internal expiration date (typically 120–180 days after the preview’s release) is reached, Office enters a reduced‑functionality mode or blocks usage entirely. This report outlines detection methods and three viable solutions, ranging from clean removal to paid licensing.
It will cause certificate errors on the web and break file timestamps.
Now, go fix your Office and get back to work. By following the steps outlined in this paper,
: Use the Office Customization Tool to enter your MAK key, or change it manually on one device via the File > Account menu.
With the "Preview" ghost gone, Alex's Office was officially activated. Alex also discovered that while Office 2021 is great, its official . To stay ahead of the game, Alex started looking into Microsoft Office LTSC 2024 , the newest edition for those who want a permanent, non-subscription version of their favorite tools.
Install a Valid Key