Same problem, but answer does not address the issue.  Recent upgrade from QB Mac Pro 2020 desktop to QB Mac 2023 desktop.  Transition appeared to be fine; system would not create backups but that problem solved following online instructions at Intuit and this Community.  I shut down computer after making backup.  Both QB and MacOs Ventura are latest versions.  Single user (me) as Administrator.  I have verified the file is Quickbooks Company file (not QBB or other file type).  Per instructions, right clicked file, selected Get Info.  Sharing & Permissions says I can read and write, with the following settings in the box:  Read & Write for me, Read only for staff, Read only for everyone.  Next steps to try to resolve?