How To Fix Microsoft Office Ltsc Professional Plus 2021 Preview Has Expired Updated -

Restart Word or Excel and follow the prompts to re-enter your valid product key. 4. Full Reinstallation

: If your organization uses a KMS server, you can trigger activation through an elevated Command Prompt: Restart Word or Excel and follow the prompts

A "Preview" version is a trial build that has a set expiration date. Once it expires, the apps enter read-only mode the apps enter read-only mode