Office Preview versions are released before the final product to gather feedback. Once the stable version of Office LTSC 2021
Deployment must be handled via the using a properly configured configuration.xml file that specifies ProPlus2021Volume instead of the preview product ID. Office Preview versions are released before the final
Method 2: Uninstall Preview and Install Full Version (Recommended) Office Preview versions are released before the final
64-bit Windows / 64-bit Office: cscript "C:\Program Files\Microsoft Office\Office16\ospp.vbs" /dstatus Office Preview versions are released before the final
Standard uninstallation through the Control Panel often leaves behind preview cached certificates that trigger the expiration error even after reinstalling.