ニュース
If you cannot open an Excel file and see Excel cannot open the file because the file format or extension is not valid error, see this post.
If you receive Microsoft Excel cannot access the file, There are several possible reasons error message you can use the following suggestions to resolve the issue.
一部の結果でアクセス不可の可能性があるため、非表示になっています。
アクセス不可の結果を表示する