Word for Mac wants additional permissions and changes file name to an "smbdelete" name
I'm running Mohave. I have two Macs that are networked with each other. Office 365-Word documents are located on Mac #1. Mac #2 uses files from Mac #1. Mac #2 has full permissions. Regardless of whether I open a file on Mac #1 or Mac #2, if I open a Word file, make a change, I get a message that Word needs additional permission to save the file, then gives it a name that starts with "smbdelete". The only work around for this is to go to File, then Save As and then either change the name or save over the old file name.
This just started happening this week. I've tried deleting the files, recreating them, copying/pasting the contents from one file to another, rebooting, closing/restarting Word. Nothing works. I see this problem on the net but have't found any solutions.
Thanks
Windows, Windows 6