Some Subfolders Not Visible on Network Shared Drive

I am seeing an intermittant problem with a network share. I am working with a network used at competitions. There are two primary computers (server in the lobby, photographer's stagelaptop near the stage), the rest are just for viewing photos via the server. The server needs to access an external drive connected to the stagelaptop.
The stagelaptop shares an external drive (shared with Everyone Full Access, NTFS permission added for a specific administrator 'Admin'). Both the server and the stagelaptop have an administrator account named 'Admin'. The server can connect to and map the shared external drive with and without the "connect as different user" option. However, on occasion some or all of the nested folders are not visible.

Oddly, subfolders can still be accessed if I manually type in the path. The files at the edge of the folder tree are still visible - when navigated to by manually typing in the path. The folders on the drive are created by a different computer before the event. So, I t tried having the stagelaptop take ownership of the drive's contents just in case. No help.

Examples: F:\Folder1\Subfolder1\...                 Folder1: Visible         Subfolder1: Not Visible
                F:\Folder2\Subfolder2\...                 Folder2: Visible         Subfolder2: Visible
                F:\Folder3\Subfolder3\...                 Folder3: Not Visible   Subfolder3: Visible (after Folder3 path typed in)

I set the share and permissions for the drive itself, not directly for the folders on the drive.
This would be fine if the directory paths that I need remained constant, but the ones I need sometimes change on the fly. For that I need to be able to browse the entire folder tree.
I don't think it's an NTFS permissions problem since I'm still able to access all the folders and files properly.
This happens most of the time, but not all of the time. It also persists beyond restarts, but it can clear up randomly. I can't identify any common circumstance.
Any thoughts?
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Here is a Microsoft Knowledge Base article that may be relevant:

After you install security update 885250 (MS05-011), you may not be able to view the contents of a subfolder on a network share by using Windows XP or Windows Server 2003

The resolution is to get an update here:

just to be sure about the NTFS perms, I would do the following:
firght click the drive, choose properties
On the Seucrity Tab i would doublecheck the permissions are set correctly
now click advanced, double check the table there as well, then check the box 'replace permission entries on all child objects...... then click apply then OK.

but your right, the perms seem to be ok if you can access at all...
maybe the laptop is saving the power of the drive by disabling it periodically, and this behavior is the result... most laptops have some manufacturer utility to control this... look at that.
and if you do not have the manufacturer util loaded, you may want to load it and see if that helps.
tau161Author Commented:
That entry didn't come up in any of my KB searches. But That's it. The suggested fix took care of it. Thank you samb39. The points are yours.
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