Describes the cause and action for error messages.
Error Message(English)：
365 does not open xls files
windows 10 - Will Office 365 Home or Personal ...
https://superuser.com/questions/1187542/will-office-365-home-or-personal-open-old-doc-dot-and-xls-fi・・・
Excel (.xls) files not opening in Excel when ...
https://superuser.com/questions/247500/excel-xls-files-not-opening-in-excel-when-launched-from-explo・・・
XLS file will not open in Excel 2016, only gray view - Microsoft
https://social.technet.microsoft.com/Forums/lync/en-US/4a15e472-a265-4058-b439-7d79c2670817/xls-file・・・
Open Office 97/2003 xls files in Excel 2016 , 365 / 2019 | EasyTweaks ...
https://www.easytweaks.com/access-xls-file-format-excel-2016/
Article 44 - Not able to open .xls file after upgrading to Excel 2016 ...
http://eforexcel.com/wp/article-44-not-able-to-open-xls-file-after-upgrading-to-excel-2016-windows-1・・・
How to make Excel 2016 the default app to open xls and xlsx data ...
https://www.tenforums.com/microsoft-office-365/63196-how-make-excel-2016-default-app-open-xls-xlsx-d・・・
MS Excel 2016, cannot open xls files located on network - Windows ...
https://www.sevenforums.com/microsoft-office/409935-ms-excel-2016-cannot-open-xls-files-located-netw・・・
Fix Excel 2016 opening a blank document - gHacks Tech News
https://www.ghacks.net/2017/11/30/fix-excel-2016-opening-a-blank-document/
Double-clicking an Office file fails to open it in the correct Office ...
https://support.office.com/en-us/article/double-clicking-an-office-file-fails-to-open-it-in-the-corr・・・