You must allow access to your home folder....

I'm trying to activate the 'Mirror Mac and Windows user folders' option and when I click it brings up the prompt 'You must allow access to your home folder....' but when I press Allow I hear the mac chime (like I cant click it) and nothing happens then the Allow button goes from blue to grey, with no other pops happening?

Can someone help me out?

 

Anyone?

 

Can anyone please help me as this is the only feature stopping me buying Parallels.

 

I have the same problem. For some weeks now, recently bought Mac Mini 4, so I am going through the hell of permissions etc. A very nasty distasteful exercise indeed.
Cynicism aside: I have allowed "Full Disk Access" to Parallels Desktop in "Privacy and Security", as well as "On" permission for Parallels Desktop in "Accessibility" in "Privacy and Security". Everything has been restarted with full quit. I have been trying this for a couple of weeks now and nothing works. Loving Parallels Desktop, not so sure I have the same love affair with Mac though.