Why can't I access LAN servers in Windows 10?

I upgraded my laptop to Windows 10, and now I can't see LAN servers (Minecraft, COD, etc).

If I start a LAN server from my desktop I am not able to connect to this server from my laptop. (I tried direct connect too). The Minecraft tells me:

Failed to login: Invalid session

My laptop and desktop are on the same network. Before the upgrade it worked perfectly, but now I don't know why it doesn't work.

dinci11

Posted 2015-08-18T15:03:41.297

Reputation: 51

Are both gateways and subnets the same? – Eric F – 2015-08-18T15:30:20.930

Where can I see this? – dinci11 – 2015-08-19T08:56:21.133

Can you open the command prompt? I know in windows 7, you can press windows key + r, type cmd into the run dialog and click ok. Once in command prompt type ipconfig – Eric F – 2015-08-19T11:24:36.483

This is the two ipconfig command: http://kepfeltoltes.hu/150912/kpe11111_www.kepfeltoltes.hu_.jpg Soo the gateway and subnet are the same and still not works. When I hade WIN7 on my laptop it worked good, but after update it is not OK.

– dinci11 – 2015-09-12T18:15:52.327

Answers

Even though this is an old question it remains unanswered and as i encountered the same problem, which took me some while to figure out, i'm sharing my solution here.

If whitelisting your application/ports in the firewall does not work, this might:

If you have several network interfaces, disable all interfaces you do not use/need for accessing the server in question. You can do this as follows:

Open the Control Panel
Open Network and Sharing Center
Click on "Change Adapter Settings"
For all adapters you don't need: right click -> deactivate

jobnz

Posted 2015-08-18T15:03:41.297

Reputation: 111

There's a few possibility.

Your computer has not been appointed a IPv4 IP (Mostly not, but possible if you're using a router)
If you're trying to connect to a lan server host by computer A using computer B, check whether computer A and computer B are on the same network or not.
If you're trying to connect to a lan server host by computer A using computer B via tools such as hamachi, check whether computer B has connected to a same network of computer A. (You should know what I mean if you're using them, and if you don't, you can ignore this)
You haven't connected into the internet (But seems that you can get into this website, isn't it?)
Your firewall is on and has blocked your connection between your game and the lan server. If this is the case, add the server port to the whitelist ON THE SERVER SIDE.

If these couldn't help you, give me a downvote and go check out other players' solutions.

Edit: one more, if the server host is using router, make sure the router is port forwarding the right port, and make sure that you use the Service Port to connect to the server instead of the Internal Port.

m31317015

Posted 2015-08-18T15:03:41.297

Reputation: 19

Yesterday I turned off the firewall, and it worked good. I added the all local port to the whitelist, and it worked well. Today i tried to play lan, but i can't because the problem is the same. I turned off the firewall again but it did not help, I can not see the lan server from my laptop. – dinci11 – 2015-09-26T09:14:45.093

Check whether your ip is changed or not, or see whether your router was reset or not. – m31317015 – 2015-09-28T09:57:42.520

My ip is always changing (dynamic ip), and the router was reset two days ago. – dinci11 – 2015-10-09T09:03:04.420