Windows 10: Windows 10 ICS Internet connection sharing is not working correctly.

For context, I am trying to use one long ethernet cable to give two computers internet. WI-FI is not strong enough where the computers are located to use that as a solution . One of the computers has two gigabit LAN connections, and is the one that I am trying to enable ICS on to try to pass the connection to the second computer, which has one gigabit port. The problem is that when enabling it on the "ethernet" adapter sharing to "ethernet 2" in control panel, the internet connection of *both* computers drops out entirely. No google, no windows update, no nothing, until i un-check the box and

:)

 

ICS (Internet connection sharing) dosent work in Windows 10 1607

For me, ICS recently broke on 1703 a while ago.

Down to «Error 1753: There are no more endpoints available from the endpoint mapper. ».

I've migrated to 1709 - and for a couple of days it worked normally. Now, it's broken again.

There's a chance that some common update package causes this on all versions. But I've not tried to find it yet.

Related feedback on feedback hub (for insiders):

• Internet Connection Sharing (ICS) stopped working automatically after Anniversary Update!
  
• https://aka.Internet Connection Sharing (ICS) hung up on "Starting..."
  - Fall Creators Update
• Internet Connection Sharing (ICS) freezes while starting

Non of them looks 100% perfect for me, so I've created one more:

• Internet Connection Sharing (ICS) stuck in "starting" state

Please consider upvoting, adding screenshot, your reproductions and etc if you want this fixed.

Personally, I was able to fix this by resetting firewall rules, as suggested in

Problems with Internet Connection Sharing after 2017-11 Windows 10 Update [Temporary fix found].

Simply do "Start -> type 'firewall' -> restore default policy" (consider creating a backup with "export Policy" before erasing it).

I'm not sure, maybe the issue would be back in a couple of days....

 

Internet Connection Sharing (ICS) not starting

I had the same issue.

Below is the solution which worked for me.

http://.com/ics-internet-connection-sharing-service-not-starting-in-windows-10/

 

Internet Connection Sharing (ICS) doesn't work automatically

We have a small network (4 PC), and all computers see each other. One PC is Win10, and the others are Win7. Win10 PC has Internet connection shared through Internet Connection Sharing (ICS), but the other PC's don't have Internet. When we open services.msc
and look at the Internet Connection Sharing (ICS) we see that status is running and startup type is set to automatic. When we STOP and after that START the service all other PC's have Internet.

Why do we need to manually stop/start the ICS service in order for all PC's to have Internet ?