Q: Will I lose my Word/Excel documents?
A: No. Your documents are saved separately on your hard drive or OneDrive. Uninstalling Office does not delete your .docx or .xlsx files.
Q: Can I just set my system clock back? A: No. Office 2021 previews use cryptographic time-stamping. Changing the date will break SSL certificates (websites will show errors) and still won’t unlock Office.
Q: Is there a free alternative? A: Yes. If you cannot buy Office, consider installing LibreOffice (free, open-source) or using the Microsoft 365 Web Apps (Word/Excel for free in your browser). Q: Will I lose my Word/Excel documents
Sometimes, remnants of the preview get stuck in a half-activated state. A repair can reset this.
Note: If the product is expired, the repair may fail. In that case, skip to Method 1. Note: If the product is expired, the repair may fail
First, it is vital to understand why this error occurs. Microsoft releases "Preview" versions of LTSC (Long Term Servicing Channel) software to enterprise customers for compatibility testing before General Availability (GA). These preview builds are time-bombed—programmed to stop functioning after a specific date. The error is not a bug; it is a feature designed to prevent pre-release software from lingering in production environments. Consequently, there is no "patch" or "registry hack" to extend the life of a preview build. Attempting to reactivate an expired preview is like trying to refill a disposable lighter; the mechanism is designed for a single, finite lifecycle.
If you are an admin testing configurations or want a clean install without using an ISO, you can use the Office Deployment Tool (ODT) to overwrite the preview with the current channel build. First, it is vital to understand why this error occurs
<Configuration>
<Add OfficeClientEdition="64" Channel="PerpetualVL2021">
<Product ID="ProPlus2021Volume">
<Language ID="en-us" />
</Product>
</Add>
<Remove All="True" />
</Configuration>
(Note: Change OfficeClientEdition to 32 if you require 32-bit. Change Language ID to your specific language code if not US English).
Warning: Incorrect registry editing can harm your system. Back up your registry first.
A: No. Uninstalling Office removes the application only. Your .docx, .xlsx, and .pptx files remain untouched. However, back them up first just in case.
Before applying a fix, confirm the issue:
cscript "C:\Program Files\Microsoft Office\Office16\ospp.vbs" /dstatus