Can access some drives on shared local network, but not others.

I have shared several drives on my desktop pc using advanced sharing - sharing with "everyone" with "full permissions". When trying to access the drives using my laptop, I am able to access one of the drives, as well as the public folders, but the other two drives (the os "C" drive, and 1 other storage drive) I cannot. I get the typical notification:

"Windows cannot access \\PC NAME\f
You do not have permission to access \\PC NAME\f. Contact your network administrator..."

Both pc's running latest windows 10 on the same local private network. The desktop is wired ethernet, the laptop is wireless.

I have shared all 3 drives on the desktop (1 ssd + 2 hdd's) using the exact same process, and yet I can only access one of the hdd's. Can someone please help explain why this could be the case? Why would I be able to access some drives, but not others?

I have shared both drives on the laptop also, but the desktop cannot access the laptop either of them, except for public folders. I have enabled media streaming on the desktop, and can access those files for viewing/playing.

I have gone through most of the typical steps to resolve network issues. What has me so confused here is that I can access some shared drives but not others.

Thanks

Me too! My notwork is a typical group of three computers in my home, all running Win 10 ver 1903, 2 desks using Pro and one lap using Home.

D is hard-wired to the router, the others are wi-fi - all get the internet so the wi-fi is working. All have discovery and file sharing on, all have password protect off.

Only ONE of six permutations actually functions, sort of.

Clicking on R from D, I see two drive letters, double clicking either gives me full access. No icon is shown for users.

The reverse, clicking on D from R. I see the icon for users (public and default), have access but clicking on drive letters gets the "No access" popup.

All other combinations:
From network, select computer. Disk letters and the Users icon are displayed. Access is only to users (default or Public folders), clicking a drive letter brings the No access pop-up