Your permission settings help prevent unauthorized persons from tampering with files on your Mac.
How to Fix the Documents Could Not Be Saved on macOS 10.15 Solution 1: Correct your Permission Settings In the following sections, we show you what to do when you can’t save a document using Word for Mac OS 10.15, no matter what the error message says. In some cases, they get a blatant error message that states that the word processor couldn’t save a file already in use in Mac OS 10.15, and in other cases, they get a more cryptic error message.
From PDFs to Word files, Excel spreadsheets, and HTML files, many Mac users have reported running into problems when trying to save various types of documents on their Mac.