User have excel workbook on SharePoint office 365 library, that links to multiple workbooks in same library. when she edits the consolidated sheet and wants to save excel is not responding and then leaves user with no option to exit another way and no data was saved. Microsoft support was contacted, but they claim that it is no problem on their side. this is not just happening with one spreadsheet, but with others that are not even linked to any other workbooks..
please have anyone have some idea of why the problem can be. it also seems that it is just happening with one user. this consolidated workbook, links to about 20 other workbooks