i can't open my excel

atmego SaidL

"I can't open my microsoft excel. My OS is Big Sur 11.14"

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Contact Microsoft Support:

They are the developer of the Software.

Start Here:  Microsoft Contact Us Virtual Agent - Microsoft Support

Did you upgrade recently?

If so you likely need to buy or rent a new version, but...

Look into the Free LibreOffice, it handles MS Office files like Word & Excel, & Page Layout…

https://www.libreoffice.org/