New computer network discovery problem

I have a wireless home network that involves a desktop running Windows 7 and 2 laptops running Windows 10 Home, version 10.0 18362 Build 18362. Everything works good between these 3 computers. I have tried to add a 3rd Laptop, also running Windows 10, and there is where my problem started.

I will call the 3rd laptop "A" for this discussion. None of the other 3 computers will recognize laptop A. However, Laptop A will recognize the other 3 computers and will read and write to their files. On the Laptop A, I have gone through the setup to make sure that "Discovery" is turned on several time.

On the 3 that are working, when I click on "Networks" all 3 original computers are displayed, including the computer where I selected "Networks". Under the Media Devices listing all of the computers are displayed, including laptop A and the other 3 computers. All 4 can access Laptop A's media. When "Networks" is selected on Laptop A, the other 3 computers are shown but Laptop A is NOT. All 4 are shown under "Media Devices".

Any help in solving this problem will certainly be appreciated.

I made a dump mistake with an old desktop that has a WiFi USB Adapter working and my Xfinity router was replaced, so when I connected the Ethernet cable it would not connect due to an IP address problem. After working on it for a few hours I suddenly remembered the old IP address was set in stone and the router had to be rebooted. Fixed that one. Simple things are most confusing at times.

That would have saved me time :) Oh well. Thanks anyway.

dustymars said:

That would have saved me time :) Oh well. Thanks anyway.

Does that mean your problem is solved?

starchase said:

Does that mean your problem is solved?

Yes, solved; just rebooted router. The problem is I am getting old and forgetful or I would have remembered the fix and not wasted time searching the Net for the cure. .