Excel cannot open the file - MacOs Mojave

MalcolmDS

New Member
Joined
Dec 27, 2018
Messages
2
<style type="text/css">p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; line-height: 17.0px; font: 15.0px 'Helvetica Neue'; color: #000000 ; -webkit-text-stroke: #000000 }span.s1 {font-kerning: none}</style>Hi,



I have a Excel spreadsheet that opens fine on a machine running Sierra 10.12.6. The file is on a dropbox.

But on another machine running Mojave 10.14.5 it gives an error message:



"Excel cannot open file 'filename' because the file format or file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file."



I can resolve the issue if I fully quit excel and then try to reopen the file.



This happens randomly with some files.



But it is very frustrating for staff to have to deal with every day.



Any ideas appreciated.

Malcolm
 

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