I have some .xlsx files that become 'read-only', on their own. I go to the 'Cmd I' to get the file info pane and I unlock it and change all the privileges to 'read & write'. and then lock it.
Then when I come to use the file it says it is 'read only' again.
It is infuriating as I am the only one using the computer and I don't want to protect the files.
What am I doing wrong please?
Many thanks in advance