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.
Important: This is a temporary emergency measure. It will break other applications (browsers, HTTPS websites, antivirus).
A: Yes. You can switch to LibreOffice, Google Workspace, or OnlyOffice. They do not expire. But if you need 100% compatibility with complex Office macros, you must buy a license.
Q: I don't have a license key yet. Can I keep using the Preview? A: No. Once the preview expires, the applications enter "Reduced Functionality Mode" or become completely unusable. You cannot retrieve documents or create new ones. You must purchase a license and install the official software.
Q: The uninstall failed. How do I force remove it? A: Use the Microsoft Support and Recovery Assistant (SaRA).
Q: Will I lose my documents? A: Uninstalling Office does not delete your Word, Excel, or PowerPoint documents. They remain on your computer. However, it is always good practice to back up important files before performing software maintenance.
This removes all preview components before deploying a perpetual or subscription license.
Steps:
Ensure that you're running the latest version of Office LTSC Professional Plus 2021. To update:
The “Microsoft Office LTSC Professional Plus 2021 Preview has expired” error is a deliberate license restriction, not a malfunction. The only permanent fix is to uninstall the preview and deploy a properly licensed, non‑preview version of Office LTSC 2021 or migrate to a Microsoft 365 subscription. Temporary reactivation methods are unreliable and not suitable for business continuity.
Recommended vendor action: If you have a valid VLSC agreement, download the latest Office LTSC 2021 Professional Plus image and redeploy using the provided MAK/KMS key.
To fix the "Microsoft Office LTSC Professional Plus 2021 Preview has expired" error, you must transition from the pre-release "Preview" version to the official, commercially released version of Office LTSC 2021 or another supported product.
Because preview builds are designed for temporary testing, they automatically expire after a set date, disabling most editing features. Below is a comprehensive guide to resolving this and getting your apps back in working order. 1. Why the "Preview Has Expired" Error Occurs
The "Preview" version of Office LTSC 2021 was a beta build released by Microsoft before the final product launched in late 2021.
Built-in Expiration: All preview software has a "kill switch" date. Once reached, the software enters "Reduced Functionality Mode." If you need to access a critical document
Limited Access: You can typically open and view documents, but you cannot create new ones, save changes, or use advanced features.
Perpetual License vs. Preview: Unlike the final Office LTSC 2021, which is a "perpetual" one-time purchase, the Preview was never meant to be permanent. 2. Immediate Fix: Transition to a Licensed Version
Since the preview cannot be "renewed," the only permanent fix is to move to a stable version. Step A: Uninstall the Preview Version
You must completely remove the expired preview to avoid licensing conflicts with the new installation.
Open the Control Panel and go to Programs and Features (or Apps & Features in Windows Settings).
Find Microsoft Office LTSC Professional Plus 2021 Preview in the list. Select Uninstall and follow the prompts.
Restart your computer to ensure all registry keys are cleared. Step B: Install a Supported Office Version Choose one of the following paths based on your needs:
Office LTSC 2021 (Final Release): If you are a commercial or government customer, you can install the official version via your Microsoft Volume Licensing Service Center (VLSC).
Office LTSC 2024: If you are looking for a more modern baseline with improved security, you may want to consider upgrading to Office LTSC 2024.
Microsoft 365: For users who prefer a subscription model with constant feature updates, Microsoft 365 is the recommended alternative. 3. Troubleshooting Persistent License Errors
If you have already installed a licensed version but still see "Preview" or "Unlicensed Product" errors, try these steps:
Perform an Online Repair: This replaces corrupted files and resets activation tokens. Go to Settings > Apps, find your Office installation, click Modify, and select Online Repair.
Update Your System: Sometimes activation fails because the OS is outdated. Check Settings > Update & Security > Windows Update for any pending patches.
Use the ODT (Office Deployment Tool): For LTSC versions, administrators often use the Office Deployment Tool to specify the correct Product ID in a configuration XML file, ensuring the system doesn't accidentally pull the Preview ID. Summary Table: Preview vs. Final Release LTSC 2021 Preview LTSC 2021 (Final) License Type Temporary / Testing Perpetual (One-time) Functionality Expired / Read-only Full Features End of Support Already Expired October 13, 2026 Usage Not for Production Commercial/Regulated Use Q: Will I lose my documents
Fixing Microsoft Office LTSC Professional Plus 2021 Preview Has Expired
Introduction
Microsoft Office LTSC (Long-Term Servicing Channel) Professional Plus 2021 is a version of Microsoft Office that is designed for organizations that require a stable and predictable platform. However, users of the preview version of Office LTSC Professional Plus 2021 may encounter an issue where the software displays a "preview has expired" message. This paper provides a step-by-step guide on how to fix this issue.
Understanding the Issue
The "preview has expired" message is a common issue faced by users of the preview version of Office LTSC Professional Plus 2021. This message is displayed because the preview version of the software has a limited lifespan and is only valid for a certain period. Once the preview period expires, the software will no longer function, and users will need to activate a licensed version or upgrade to a newer version.
Solution 1: Activate a Licensed Version
To fix the "preview has expired" issue, users can activate a licensed version of Office LTSC Professional Plus 2021. Here's how:
Solution 2: Convert to a Permanent License
If you have a valid license for Office LTSC Professional Plus 2021, but the preview version has expired, you can convert the preview version to a permanent license. Here's how:
Solution 3: Uninstall and Reinstall
If the above solutions do not work, users can try uninstalling and reinstalling Office LTSC Professional Plus 2021. Here's how:
Conclusion
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.
Additional Tips
References
The "Microsoft Office LTSC Professional Plus 2021 Preview has expired" message occurs because the preview version is a temporary license that has reached its end-of-life. To fix this, you must replace the preview license with a permanent one or install a supported version of Office. Step 1: Remove the Expired License
If you have a valid product key, you can try to remove the expired preview license from your system to prevent it from conflicting with a new activation.
Open an elevated Command Prompt (right-click Start > Command Prompt (Admin) or PowerShell (Admin)). Navigate to the Office installation folder: 64-bit: cd "\Program Files\Microsoft Office\Office16"
32-bit (on 64-bit Windows): cd "\Program Files (x86)\Microsoft Office\Office16"
Check the current license status and find the last 5 characters of the expired preview key by running:cscript ospp.vbs /dstatus
Remove the expired key using those 5 characters:cscript ospp.vbs /unpkey:XXXXX (Replace XXXXX with your characters) Step 2: Activate with a Valid Key
Once the expired license is removed, you can activate the full version if you have a purchased key.
Via Application: Open any Office app like Word, go to File > Account, and select Change Product Key or Activate.
Via Command Line: In the same elevated Command Prompt from Step 1, run:cscript ospp.vbs /inpkey:YOUR-PRODUCT-KEYcscript ospp.vbs /act Step 3: Full Reinstallation (Recommended)
If simple reactivation fails, the most reliable fix is to perform a clean installation of the official LTSC version.
To avoid seeing "Preview has expired" ever again:
| Do This | Avoid This | |-------------|----------------| | Purchase Office from Microsoft Store or authorized reseller. | Download Office from torrents or unknown blogs. | | Use Microsoft 365 (always up-to-date, never expires). | Install "Time-limited evaluation" ISOs for production work. | | Keep a record of your product key in a safe place. | Ignore activation warnings until the last day. | | Use the official Office Deployment Tool with a perpetual channel. | Use preview channels on primary work devices. |