Download ODT from Microsoft.com and extract the setup.exe and sample XML files. To fix the "Microsoft Office LTSC Professional Plus

How to Fix "Microsoft Office LTSC Professional Plus 2021 Preview Has Expired" – A Complete Guide

Encountering the error message "Microsoft Office LTSC Professional Plus 2021 Preview has expired" can be frustrating. You are mid-way through an important report, spreadsheet, or presentation, and suddenly, Office locks you out. Buttons are greyed out, menus disappear, and a persistent dialog box blocks your workflow. Download ODT from Microsoft

1. Uninstall Office: Go to Settings > Apps. Uninstall every Microsoft Office entry (Preview, LTSC, 365).
2. Run Microsoft SARA Tool: Download the Microsoft Support and Recovery Assistant (official Microsoft tool). Run it, select “Office” > “I’ve uninstalled Office but still have issues” – this scrubs leftover registry keys.
3. Restart your PC.
4. Reinstall Office: Log into your Microsoft Account (or work portal) and download the official, non-preview version of Office LTSC Professional Plus 2021.
5. Activate: Use your purchased license key.

The expiration of "Microsoft Office LTSC Professional Plus 2021 Preview" marks the end of a trial period intended for evaluation rather than long-term use. Because preview software is built with an embedded "kill-date," simply trying to repair the application or re-enter the preview key will not restore functionality. Resolving this requires a deliberate transition to a stable, licensed environment. Understanding the Expiration Uninstall Office: Go to Settings > Apps

1. Open any Office app (e.g., Word).
2. Go to File → Account.
3. Under “Product Information”, look for:

   Alternative Solutions and Considerations

   Since LTSC is a volume-licensed product, you typically need to use the Office Deployment Tool (ODT) rather than a standard installer Microsoft Learn