Before installing a functioning version of Office, you must completely remove the expired preview build to prevent product key conflicts and registry errors. Open the and click on Settings (the gear icon).
, preventing you from creating or editing documents. Because the "Preview" is a temporary pre-release version, it cannot be "fixed" simply by entering a standard consumer key;
Which (Windows 10 or Windows 11) is the machine running? Share public link
If you need to access a critical document for a few minutes before performing the proper fix, you can trick the license check by changing your system date.
cscript ospp.vbs /sethst:your-kms-server-address.com cscript ospp.vbs /act Use code with caution. Before installing a functioning version of Office, you
This means your Command Prompt was not opened with Administrative privileges.
: If you are on a Mac or facing persistent license conflicts on PC, use the License Removal Tool to clear old credentials before signing back in with your active account.
After cleaning the credentials and registry, you will need to reinstall Office and activate it again.
Use the Office Deployment Tool (ODT) to install the licensed version. Update Office LTSC 2021 - Microsoft Learn Because the "Preview" is a temporary pre-release version,
Note: If the product is expired, the repair may fail. In that case, skip to Method 1.
Method 2: Perform a Clean Reinstall Using the Official Removal Tool
When Microsoft develops enterprise software, they provide public beta keys under the Long-Term Servicing Channel. These keys contain hardcoded expiration dates.
This error message is not caused by a virus or by a critical system failure. It appears because Microsoft Office includes an initial grace period (typically 30 days) for you to try the product before purchasing a license. Once this period expires, Office enters a "reduced functionality mode" where you can view documents but can't edit or create new ones until you activate it. The message may vary slightly, sometimes referring to "Office LTSC Professional Plus 2024 Preview," but the underlying issue remains the same. This means your Command Prompt was not opened
Fixing the Microsoft Office LTSC Professional Plus 2021 Preview expiration issue requires transitioning from the pre-release software to a stable version. The "Preview" edition was a temporary testing build that lacks a permanent activation path now that the software is fully released. Why Your Office 2021 Preview Expired
Once expired, Word, Excel, and PowerPoint operate strictly as read-only viewers.
Because LTSC is an enterprise product, installing the correct production copy requires the Microsoft Office Deployment Tool.