Remote desktop only coecting to some computers within a network

I've been having some issues with Remote Desktop Coections, and I can't seem to find an answer after googling and looking through previous threads. Hoping to hear everyone's thoughts on what I may be missing out on.

Situation

There are 5 computers within my work place -

• Desktop (D), coected via LAN cable
• Spare laptop (S), coected to wifi
• Laptop 1,2,3 (1,2,3), coected via LAN cable and wifi

I hope to remotely control the desktop unit D from the Spare unit S, but when I try to I encounter the standard error: "Remote Desktop can't coect to the remote computer for one of these reasons". I am able to remotely coect to D using Laptops 1-3, but unfortunately these 3 laptops are often used for other reasons so I would still need to use S most of the time.

Between Laptops 1-3 and S, S seems to be able to remotely coect to laptop 3, but the same error appears for laptops 1 and 2.

Coecting from D to the other units, the standard error appears in each scenario. I find this strange but it's not important; I do not have to remotely control the laptops from my desktop.

When I try to ping the various units, this was what I observed.

• S ping to D : timed out
• 1,2,3 ping to D: 0% lost
• S ping to 1: 0% lost
• S ping to 2: timed out
• S ping to 3: 0% lost

In the other direction,

• D ping to 1,3: 0% lost
• D ping to 2: timed out
• D ping to S: timed out

Hope the information is relevant. Would appreciate advice on how I may get [B]S[/B] to remotely coect with [B]D[/B], or an explanation on why it may not be possible to accomplish what I hope to do.

Thanks in advance!