How To Fix Microsoft Office Ltsc Professional Plus 2021 Preview Has Expired May 2026

A: Your KMS host might be serving a preview KMS key. Contact your admin to switch to the LTSC 2021 Volume License KMS key.

Now, let’s fix it.

If you have a valid license but the leftover preview token is blocking it, you can manually reset Office activation. A: Your KMS host might be serving a preview KMS key

If you are in a corporate environment, the preview may have been deployed via Group Policy or Microsoft Endpoint Configuration Manager. In this case, individual fixes will not work because the system automatically reinstalls the preview from a network share.

This method completely bypasses the Windows Installer cache and ensures no preview residues remain. If you have a valid license but the

If you haven't activated Office LTSC Professional Plus 2021, follow these steps:

If none of the above solutions work, try reinstalling Office LTSC Professional Plus 2021: If you haven't activated Office LTSC Professional Plus

For users with a valid LTSC 2021 volume license but who accidentally installed the preview.

Steps: