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.