Describes the cause and action for error messages.
Error Message(English)：
share workbook missing
About the shared workbook feature - Office Support
https://support.office.com/en-ie/article/about-the-shared-workbook-feature-49b833c0-873b-48d8-8bf2-c・・・
Recovering the Missing Excel Share Workbook Command ...
https://www.presentationpoint.com/blog/excel-share-workbook-command/
Add Shared Workbook buttons to the Excel Quick Access Toolbar
https://www.thewindowsclub.com/add-shared-workbook-buttons-excel
Excel shared workbook: How to share Excel file for multiple users
https://www.ablebits.com/office-addins-blog/2017/08/02/excel-shared-workbook-share-file-multiple-use・・・
How to share Excel file for ...
https://www.ablebits.com/office-addins-blog/2017/08/02/excel-shared-workbook-share-file-multiple-use・・・
How to share Excel ...
https://www.ablebits.com/office-addins-blog/2017/08/02/excel-shared-workbook-share-file-multiple-use・・・
Resolve conflicting changes ...
https://www.ablebits.com/office-addins-blog/2017/08/02/excel-shared-workbook-share-file-multiple-use・・・
How to Share Excel Workbooks and Track Changes Easily [2019]
https://spreadsheeto.com/share-workbooks/
Losing Data in a Shared Workbook (Microsoft Excel) - Excel Tips
https://excel.tips.net/T002998_Losing_Data_in_a_Shared_Workbook.html