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Office 365: Excel FAQs

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  • Audience: Faculty, Staff, Student
  • Service Category: Email & Collaboration
  • Owner Team: IT DWS Collaboration
  • Service:
    Microsoft 365: Excel

We continue to update these FAQs. If your question isn't answered here, please contact the IT Service Desk at help.ucsf.edu, or ask your colleagues on the Office 365 Team.

How do I perform advanced functions in Office 365 apps?

Some advanced functionality is not available. See the comparison document, Differences in Functionality - Excel for more information.

What is the file size supported for Excel on the web?

  • There is a 50MB file size limit to Edit a document in Word or Excel on the web.
  • There is no limit to view files in Word or Excel for the web, but it is subject to a 60-second time out for file download. This time out can affect the perceived file size limit

Will I be able to use Office 365 applications (e.g., Word Online, Excel Online) when I am in Box?

Yes. When you open a Microsoft Office file in Box, you will see an option to open the file either on your desktop or online. There will be a drop-down arrow between the application icon and download button. If you select the online option, you will be working in Office 365 and saving directly back to Box, but some of the collaborative tools available in Office 365 are currently more limited.

I don't see Version History for Excel.

Version History is not available from within the Excel Online application.

Excel Online is freezing and/or flashing as I try to work.

The file size may be too large for effective work online. If you have a desktop version of Excel, download the file, work locally and upload your file for storage.

Related Information

  • Microsoft 365: Excel Training
Section Menu
Microsoft 365: Excel
  • Microsoft 365: Excel Training
  • Microsoft 365 Mobile Applications
  • Microsoft 365: Excel Differences in Functionality
  • Microsoft 365: Forms for Excel, Outlook, and Teams
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