0x80070035 network connectivity issue!

I have two laptops connected to (the same) wifi network and a desktop connected by ethernet to the same router. One of the laptops is running Win 10 Pro the other two machines Win11 Pro. I can see all three machines from all three machines in File Explorer.

The two laptops have local user accounts, the desktop has a Microsoft Account (passwordless using Windows Hello) Each laptop can access shared folders on the other laptop without issue. However whilst the Win 10 laptop can access shared folders on the Desktop machine, the Win 11 Laptop just gives 'Windows cannot access \\[Machine Name] Error Code 0x80070035' Checked all the obvious settings on the wIN11 Laptop but ideas welcome!

Have you tried using credential manager to set it up or to refresh that laptop?

Bit of a change today after all machines turned off overnight (no settings changed)
Win10 laptop can see Desktop but not Win11 laptop, Win11 laptop can see Desktop but not Win10 laptop and Desktop can see both laptops but can't access either.!!!

@flhthemi - no I hadnt and havent used credential manager - should I have to?

My db says following code:
# 1 matches found for "0x80070035"
# The network path was not found.

So recheck the path.

Yep, done that. Path doesn't exist. Question now is why.

If you do a 'ping <computername>' what is returned?
Do you have local DNS setup? If no, how long is the computer name?