Problem occurred in saving a file

Hello, 

I have plenty of storage on a recently new laptop, but when I wanted to save a file yesterday I got the message: 'An error accurred while saving the file. We tried to fix it, but it seems the file is damnaged. Do you wan't us to repair it?'

Of course I wanted that, but when the file was repaired,  I got the same message, not only on that file, but on all the others I tried tot save afterwards. It was repetitive, not only yesterday, but also today.

What's happening?