Is there a file size capacity? I have a large excel file with multiple tabs .

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I have a large excel file that I have been using for 20 + years.   Prior to 365,   a few of my older versions froze and I had to start over using a backup file.   Just want to avoid this now.   the current size is only 3.6 MB  with 24 tabs.

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Use Excel with earlier versions of Excel

For backward compatibility with earlier versions of Excel, such as Excel 97-2003, you can use one of two ways to exchange workbooks between the different versions.

More infos in the upper link.


Additional Informations:

Excel specifications and limits