Describes the cause and action for error messages.
Error Message(English)：
cara mengatasi excel expired
https://www.youtube.com/watch?v=jmfSy4W_OVs
How to make new documents after your subscription expired - YouTube
https://www.youtube.com/watch?v=Md0sLXH0CoE
https://www.youtube.com/watch?v=Md0sLXH0CoE
How To Use Microsoft Office (Free) Even After Subscription/Trial ...
https://www.youtube.com/watch?v=UmvQktZKx54
https://www.youtube.com/watch?v=UmvQktZKx54
"Your beta software has expired" message in Office 2010
https://support.microsoft.com/en-us/help/982240/your-beta-software-has-expired-message-in-office-201・・・
Office 365 - Your subscription has expired
https://kb.wisc.edu/office365/page.php?id=71330
Recover Corrupted Excel File 2007, 2010 | Easy Methods
https://www.stellarinfo.com/article/recover-corrupted-excel-file-2010-2007.php
How to fix Office 365/2016/2019 "Activation" or "Unlicensed Product"
https://www.itguyswa.com.au/fix-office-365-office-2016-activation-unlicensed-product-problems/