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The only definitive fix is to remove the expired preview and replace it with a build of Office LTSC 2021. However, standard uninstallation via the Windows Control Panel often leaves behind activation tokens and registry keys that confuse the new installation. To perform a clean sweep:
to ensure all registry keys and temporary files are deleted. Step 2: Install a Supported Version The only definitive fix is to remove the
If the script above feels intimidating, try Microsoft’s built-in repair tool. but the preview version has expired
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: The only definitive fix is to remove the
To avoid seeing "Preview has expired" ever again: