I have two systems running Windows 10 Pro. One is v2004 and the other is v20H2. The latter has a large external hard drive connected. I want to be able to access it from the v2004 system. I set the drive to share on the v20H2 system and have a drive letter, Z. I set the permissions to "full" and used the advanced settings to disable the need for a password. From the v2004 system, I can see the v20H2 system and the shared drive in the file explorer. However I cannot access the drive. I get the dialog below. What do I need to do, and where?