Cannot Save Excel Files

[RichardShermanMe]

Good morning,

For some reason I cannot save the excel files I have open. My subscription isn't up until May of 2022 and I am signed in as far as I can tell. I can't make any changes to anything inside the spreadsheet. It will let me print the files with either my printer of CuteWriterPDF.

Thank you in advance.

[#2]

@RichardShermanMe 

Need to ask a couple other questions (and even then may not have an answer)

1. Are you able to save Word or PowerPoint files? 
2. How about other non Microsoft files?
3. Where are you trying to save the files to? (Your own computer's hard drive? One Drive? Drop Box? iCloud?)
4. When did this first start happening? 
5. Is it all Excel files? Is there something distinct or different about these files with which you're experiencing the difficulty?