excel 2010 Cannot open xlsx file after save other users can open

One user cannot open a saved excel xlsx file. Other users can. And the user can open other excel files. Wet to backup files before problem, still cannot open, other users can. Error popup box says Could not open 'G:\2018 accounting worksheets\dailycheckbook 2018.xlsx'  and in blue small type WAS THIS INFORMATION HELPFUL?    Repaired office 2010, File security .  to recap, 1 user cannot open 1 file, the spreadsheet only has 8 lines and 10 columns and 1 link to last years ending total. Other people can open the file and it works correctly, the user can open other spreadsheets. All users are using the same version excel. 2010. The Backup copy and 2 days prior get the same message.  deleted the link, and the problem continued. Rebooted, same issue.
Jeff TomichAsked:
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Brian BEE Topic Advisor, Independant Technology ProfessionalCommented:
If they copy the file to their C: drive, can they open it then?

If not: 1. Run Excel in safe mode (run "excel /safe")
2. Rather than a repair of office, I recommend a complete uninstall and reinstall, then reapply patches.
Jeff TomichAuthor Commented:
Thank you so much for the reply.    I found offline files turned on the user computer after seeing files that had 0 bytes and 2 deleted files in the network folder on the user computer, that didn't match the server.  That persisted even after a PC boot, and the lan has not been down.  DISABLED OFFLINE FILES, FIXED.  I do not understand this issue on a local  Lan.  I do appreciate your fast response.

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Brian BEE Topic Advisor, Independant Technology ProfessionalCommented:
Good find. Thanks for getting back with the results.
Jeff TomichAuthor Commented:
Stumbled across cause and solution after posting
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