@SHWETA2411
Make sure your copy of Office is up to date.
You need to install all updates to Office and OS X.
How to Fix Documents Not Saving on macOS
Problems saving a workbook in Excel for Mac 2011
I would be happy to know if I could help.
Nikolino
I know I don't know anything (Socrates)
* Kindly Mark and Vote this reply if it helps please, as it will be beneficial to more Community members reading here.
