LAN doesn't have a valid IP configuration! (ICS prob.)

I have instaled Windows 7 Ultimate 32bit on my new computer. (Dual boot with XP). On my old computer there was installed XP... so the problem is:
When i tryed to share Internet connection Windows 7 gave me an error:
"Local Area Connection" doesn't have a valid IP configuration
but files were shared and i could transfer files from one computer to the other... (only Internet didnt work)...
So i got back to win XP and tried to share connection ( XP vs XP ) and it worked great...
Then i thought: maybe windows 7 and windows XP cant share internet connection... and i installed windows 7 on the old computer (win7 vs win7)...
But then both computers came up with the same error ("Local Area Connection" doesn't have a valid IP configuration).

Not advisable to be posting that .txt online. It has your specific hardware info in it that can be abused by hackers. Especially because you connect directly to internet.

Try setting up static ip addresses for your machines and disable the mode/router's DHCP server.

Edit hosts file for each machine accordingly.

i set up a stactic ip addresses on both computers (i used this guide Get A Static IP! How to set a static ip address for your computer (for p2p, web servers, bittorrent, etc) for Linux, Windows, and Mac.)...
but im not sure how to disable the ,,mode/router's DHCP server''.
My old computer is connected directly to new computer through NIC, and modem is connected to new computer through USB.

tonibgd said:

i set up a stactic ip addresses on both computers (i used this guide Get A Static IP! How to set a static ip address for your computer (for p2p, web servers, bittorrent, etc) for Linux, Windows, and Mac.)...
but im not sure how to disable the ,,mode/router's DHCP server''

Click to expand...

How exactly did you configured your static IPs? screenshot your ipv4/6.

As for changing auto DHCP to Static IP, your router's control panel has these setting which you should select.

But if you have applied static IP to your machine (ipv4/6), that setting is void, per machine that you have set it as static ip.

file sharing still works great but ICS does not...
here are the screens...

Your default is 192.168.1.1, why two same screens?

aem said:

Your default is 192.168.1.1, why two same screens?

Click to expand...

im confused right now...
i will appreciated it if you can you just post 2 screenshots of how should it look (one for IP for new and one for old computer)

Default gateway and dns server for both machines = 192.168.1.1

subnet mask for both machines = 255.255.255.0

Ip address of both machines = 192.168.1.xxx

Change xxx for each machine to something different.

Example:

COMPUTERA 192.168.1.120
COMPUTERB 192.168.1.121

(Disclaimer - xxx is not like 42nd street in the mid 80s)

I did everything you said.
Now there is no more error but ICS still doesn't work.
File sharing still works great...

Any other ideas?

Start menu search box. Copy and paste services.msc to it. Hit enter. Look at Internet Connection Sharing (ICS) service. Set it to automatic and start it too.

torrentg said:

Start menu search box. Copy and paste services.msc to it. Hit enter. Look at Internet Connection Sharing (ICS) service. Set it to automatic and start it too.

Click to expand...

It was already started and set to automatic.

I think i found a problem...
One my old computer ICS service was not started and when i tried to start it this error came up.

This might help.

Windows XP's Internet Connection Sharing opens up client connectivity options with Server Publishing

Specifically,



Make sure Windows Firewall is running on both machines too.

Windows 7 is little different from XP and there is no ,,Advanced tab'' in External Properties.
I tried to find it somewhere else but i couldn't...http://idioms.thefreedictionary.com/couldn't

Does anybody know how to start ICS service if i have this error?????

,,The Internet Connection Sharing (ICS) service on Local Computer started and then stopped. Some services stop automatically if they are not in use by other services or programs''

This is definitely the weirdest problem i ever had with my computer... :huh:
But i found a solution
I connected my modem to the old computer and then enabled ICS on it...
After that both computers had internet... :shock:
i was shocked that it worked... :sarc:

I still don't know what the problem was but the important thing is that ICS works now.

THX EVERYBODY FOR YOUR HELP I REALLY APPRECIATED IT!

I hate it when some one fixes their computer and never reports the fix, so here is what worked for me.

First of all I live in a Best Western Hotel (not a motel) and they have EXCELLENT tech support. The BW tech support guy unblocked me from wherever he lives at the other end of the phone. Here's what happened and what he did.

The Problem
My computer's wireless and Ethernet adapters were physically blocked from the router. I had an Unknown network and got the dreaded 651 error and the message, “Local area connection doesn't have a valid IP configuration.”

How'd that happen?
I was using an add-on to Firefox to check my bookmarks for dead links. I can't remember which add-on it was because I reverted to an earlier version of my OS in an attempt to fix it. When it reverted it deleted the add-on. Today when I went to find it again, it is not available. Wonder why??? The kicker to all this is that I was watching my computer when the problem happened. It was like someone flipped a switch turning off my Ethernet adapter. I was on the wired connection (Ethernet) and switched to the wireless with no problems...until I tried to check my dead links again. Again the switch flipped off but for my Wireless adapter. RIGHT IN FRONT OF ME! Then I was really dead in the water. The problem was that the Best Western firewall saw my computer checking my bookmarks. The computer checked more than 300 websites within 1 minute and the firewall thought my computer had a virus. Thinking it had a virus the firewall blocked the physical address of my Ethernet adapter (first) and my wireless adapter (second) from further connections.

The Fix

1. Start by running cmd from the start menu
2. Type “ipconfig /all” without the quotes
3. Write down the physical address of which ever connection is/are not working. If you are hard wired to your router, then use the Ethernet adapter physical address. If you are running wireless, then use the Wireless LAN adapter. I had to do this for both.
4. Go to your router's firewall and find the physical addresses of the connections.
5. Find the physical address(s) of your blocked adapter(s) and unblock it.

Sorry I can't be more specific for everyone's router but that is the general idea. I'm using Win 7 but I don't think it makes any difference.

YOUR problem
If you did not do anything unnatural that a firewall might have picked up as a virus, then you might have an actual virus that your outbound firewall blocked.

Hi guys!

I have had the same problem for a few days now, and have searched numerous forums and gone through hell and high water to fix it. nothing helped until I found the ultimate solution that will help everyone:

CALL YOUR ISP, TELL THEM WHAT HAPPENED AND THEY CAN CONFIGURE A NEW IP ADDRESS FOR YOUR CONNECTION. IT ONLY TAKES ABOUT HALF AN HOUR.

During this time you must keep your router/modem turned off, and after the ISP has fixed the problem (in my case it took half an hour) you must restart your machine with the router/modem on and connected. From then on it should be like nothing ever happened.

Just for the fun of it, here's a list of things I have tried without results:

release/renew ipconfig
restarting modem/router and computer about a zillion times
changing LAN card
creating a static IP
resetting winsock in command prompt
reinstalling Win7
reinstalling XP (I had a dual boot and I did both, losing all installations)
manually entering IP address
disabling/enabling local area connection
plugging and unplugging LAN cable
uninstalling and reinstalling LAN card driver
resetting modem/router using the reset button

And after all this, all it took was just a phone call.
This is because your ISP is THE ONLY authority when it comes to configuring your IP address. In this case, it can only be done from the outside. This is also the reason why Microsoft didn't announce any patches or fixes for this problem, because it is not their problem and responsibility.

Only one question remains, WHY is this happening? Noone has been able to answer this, and I have read tons of forum posts about it. Maybe even the guys that made Windows 7 don't know it.

I am going to copy this post on several other forums because I have seen the trouble that people are having with this problem.

If you find out why this is happening, please post it here.

Error 1075 on W7HP

I'm trying to get ICS to work so I can share the internet from my laptop with my Xbox 360. I'm getting this error, and it says that "The dependency service does not exist or has been marked for deletion. How do I fix this?