Backup software - access denied

[Michael]

@random_guy

Is there anything I have to consider in the mount options when I want external software to have full access to the mounted drive?

Not that I am aware of. Is there a chance that the vault is/was on Dropbox?
If yes then maybe related to this

"The file has properties that can't be copied"

To summarize: When the file was located in Dropbox before, you get this warning. The location where the vault is stored doesn’t matter. I think this “additional property” that can’t be copied might be the small Dropbox “checkmark” icon indicating whether the file’s sync state. The reason of this error message is explained here: As explained in the linked answer, Cryptomator is a file system that only supports standard attributes.