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Windows 7: Friend's computer cannot connect to my network

28 Apr 2012   #11
F5ing

Windows 7 Ultimate x64
 
 

Yes, do as Kaktussoft recommends. The only way static ip would work is if it didn't conflict with another device already using that ip address on the network your friend is trying to connect to.

On top of that, it'll never connect to a network that doesn't start with 192.168.0.xxx.


My System SpecsSystem Spec
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28 Apr 2012   #12
edwar

7 x64
 
 

Yeah your friends computers DHCP is not enabled. Not sure why he does that but that is the problem.
My System SpecsSystem Spec
28 Apr 2012   #13
Kaktussoft

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 

Quote   Quote: Originally Posted by edwar View Post
Yeah your friends computers DHCP is not enabled. Not sure why he does that but that is the problem.
It works when connecting to neighbour because:
your house, your friend's house and your neighbour all have 192.168.0.x and router 192.168.0.1 (just a coincidence).

So it works at neighbour and your house as well!! You can ping an internet site using ip-address I assume.

The DNS server isn't working because you have another provider. Neighbour has same provider as your friend at home?
---------------
Once again set TCP/IP address to automatically obtain and DNS automatically as well
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28 Apr 2012   #14
Vincenzo

Windows 7 Professional x64
 
 

OK thank you so very much guys.

By the way, what was it in ipconfig that gave you the clue. Was it the lack of a DHCP server entry and the IPv4 Address being 192.168.0.2?

Thanks
My System SpecsSystem Spec
28 Apr 2012   #15
F5ing

Windows 7 Ultimate x64
 
 

It was mostly the DHCP setting not in auto. That meant he could only connect to a network that was using an ip of 192.168.0.x, but even then, that also means that there could not be another device on that network that was using his specific ip of 192.168.0.2.
My System SpecsSystem Spec
29 Apr 2012   #16
Kaktussoft

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 

Quote   Quote: Originally Posted by sibbil View Post
It was mostly the DHCP setting not in auto. That meant he could only connect to a network that was using an ip of 192.168.0.x, but even then, that also means that there could not be another device on that network that was using his specific ip of 192.168.0.2.
ip=192.168.0.1
gateway=192.168.0.1

all fixed addresses!!
but should work because you have the same by conincidence.

But dns were fixed and pointing to wrong provider!
My System SpecsSystem Spec
29 Apr 2012   #17
UsernameIssues

W7 Pro SP1 64bit
 
 

Quote   Quote: Originally Posted by Vincenzo View Post
...By the way, what was it in ipconfig that gave you the clue. Was it the lack of a DHCP server entry and the IPv4 Address being 192.168.0.2?...
You've been given several good answers to this - I would like to add a bit.

This is from your computer:
Friend's computer cannot connect to my network-good.jpg
Notice that the last three digits of the IPv4 address end in 102. That probably means that the router in your home is set to hand out IP addresses from 198.162.0.100 thru 198.162.0.150. Some routers will not talk to computers that are using an IP address outside of the range that they are setup to hand out. I visit a friend's home that has a router like that (I won't go into why I use a static IP address on a laptop.) Your neighbor's router may also be setup to hand out IPs from 198.162.0.100 thru 198.162.0.150, but it might accept any other 198.162.0.xxx IP.

This is from your friend's computer:
Friend's computer cannot connect to my network-bad.jpg
Do you see what others in the this thread saw as the problem?
"DHCP Enabled" was No on that computer.

As others have mentioned, there is also the possibility that another device was already using 198.162.0.2 in your house. Did you see any warnings about a conflict?
(edit: you might want to watch it in the full screen mode)

I do not have a W7 system that connects via WiFi with me right now, so I cannot be sure that you would even see the stuff that I did when I intentionally set the computer in the video to a static IP that conflicted with one already on my network.

hope this helps


My System SpecsSystem Spec
30 Apr 2012   #18
Vincenzo

Windows 7 Professional x64
 
 

OK thanks to all for all the information.

One more thing.
What is it that generally causes "DHCP enabled" to go to "No". Is it the changing of the settings mentioned above (taking Obtain IP and/or DNS off automatic) or is there another setting that causes that?

Thanks
My System SpecsSystem Spec
30 Apr 2012   #19
edwar

7 x64
 
 

It doesn't just go Disabled, "DHCP Enabled = NO". It is a setting that changed when the user made the decided to use a Static IP address. Once you assign a static IP the system does not ASK the DHCP server for an IP address.
My System SpecsSystem Spec
01 May 2012   #20
UsernameIssues

W7 Pro SP1 64bit
 
 

Quote   Quote: Originally Posted by Vincenzo View Post
OK thanks to all for all the information.

One more thing.
What is it that generally causes "DHCP enabled" to go to "No". Is it the changing of the settings mentioned above (taking Obtain IP and/or DNS off automatic) or is there another setting that causes that?

Thanks
Changing "DHCP enabled" to "No" is done by setting a static IP address.
Changing "DHCP enabled" to "Yes" is done by setting the IP to be dynamic.

Static = things do not change.
Dynamic = things change.
See this write up.

"DHCP enabled" can change from "No" to "Yes" or from "Yes" to "No" because of software or because the user manually changed these settings shown in the link above. In my case, I use software to change things around several times a day.

Some part of your network will probably have a device (like a router or wireless access point) that is waiting to "give" an IP address to any device that connects. But, the device must ask for an IP address. If you setup a device (like a laptop) with a static IP address - it simply will not ask for another IP address from the router or wireless access point when it connects.

Make sense?
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 Friend's computer cannot connect to my network




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