Because of your path, the name of the file has changed! For example, your company's link is C: 123.XLS The computer at home does not have this file at all. Of course, it is wrong
1. The document is not complete, copy again. 2. The version is incompatible. It is recommended to change to the OFFICE version. The latest version of 2013 can be upgraded from 2007. 3. Some files on the computer are lost for some reasons, which sometimes affects Office.