Solved Randomly loses networked PCs

[SevenUser09]

I have another PC networked to my Windows 7 Pro build 7600 computer however randomly 7 will not detect the other PC. It will show on my full network map but I cannot in any way access it. And sometimes even the other PC will throw up a network locaton unavailable message when trying to access the 7 PC. I even rebooted both PCs and it did not work. It allowed the XP system to connect but 7 could still NOT see XP. I even had a share open only a few minutes prior moving some files. But this time it disappeared when I closed the windows explorer window. Other times is all random. Any idea what could be the issue? I will still have an active internet connection and all of that will be uninterrupted but I just cannot see or access the other location.

 

[zigzag3143]

I have another PC networked to my Windows 7 Pro build 7600 computer however randomly 7 will not detect the other PC. It will show on my full network map but I cannot in any way access it. And sometimes even the other PC will throw up a network locaton unavailable message when trying to access the 7 PC. I even rebooted both PCs and it did not work. It allowed the XP system to connect but 7 could still NOT see XP. I even had a share open only a few minutes prior moving some files. But this time it disappeared when I closed the windows explorer window. Other times is all random. Any idea what could be the issue?

SU

Sounds like IP-6 is enabled in network and sharing. In adapter>advanced>uncheck

You could also tell us abit more abt your network setup

Ken

 

[SevenUser09]

I have a switch connected to a router and both PCs connected to the switch. Very simple network. IPv6 was checked in the network adapter properties. I just unchecked it. Though a minute before I did that the other PC appeared. Will it stay there consistantly with IPv2 turned off? Is there any reason to use v6?

 

[zigzag3143]

I have a switch connected to a router and both PCs connected to the switch. Very simple network. IPv6 was checked in the network adapter properties. I just unchecked it. Though a minute before I did that the other PC appeared. Will it stay there consistantly with IPv2 turned off? Is there any reason to use v6?

Not much use for IP-6 yet. when we are forced to implement it you will be glad its there. The internet is running out of addresses. IP-2 I never heard or typo?

Ken

 

[SevenUser09]

Not much use for IP-6 yet. when we are forced to implement it you will be glad its there. The internet is running out of addresses. IP-2 I never heard or typo?

Ken

Was a typo. Since I turned off IPv6 I should no longer have any issues?

 

[zigzag3143]

Dont think that was your only problem but random drop out is often the major problem of IP-6

 

[SevenUser09]

Both firewalls are set to allow connections from the other PC so I don't think that was the issue. What else could it have been?

 

[SevenUser09]

It looks like this has happened again with IPv6 off.

 

[SevenUser09]

I am still having the issue where my Windows XP machine keeps disappearing from the network. It shows on the full network map but doesn't allow a connection to it.

 

[DocBrown]

I am still having the issue where my Windows XP machine keeps disappearing from the network. It shows on the full network map but doesn't allow a connection to it.

How did you set up your network with the win7 machine ?

As a HomeGroup or as a work network ?

HomeGroup does not play well with win7 computers & Xp computers

" Doc "

 

[SevenUser09]

I did not use a homegroup. I just go to network. I disabled homegroups actually.

 

[DocBrown]

Do you have Discovery ON ?

 

[SevenUser09]

Network discovery is on.

 

[chev65]

You do need to enable sharing on the XP machine also. I've been sharing between the two OP systems since Jan. works perfectly. You may need to hit the refresh button on the Win7 machine a few times before the XP machine shows up.

 

[SevenUser09]

Sharing is enabled on both. A couple of times I refreshed the list about 5 times with no luck until I rebooted the Win7 PC.

 

[SquonkSC]

Sharing is enabled on both. A couple of times I refreshed the list about 5 times with no luck until I rebooted the Win7 PC.

Despite your remark that the firewalls are set to accept, I am almost certain they are not set right.
The symptoms you describe sound like a firewall issue.

This is what you need to do:

Disable all the firewalls. See what happens.

If this works ok, you will have to examine the firewall rules more closely.

Enable only one firewall at a time when experimenting with the rules.

When you have one setup right, go to the next etc..

Good luck

 

[SevenUser09]

Well I use COMODO firewall and used it when my laptop was Vista. all I did was import/export the settings so they are the same.

 

[Antman]

Squonksc has presented a valid test. An easy test. A test that you should administer.

 

[SquonkSC]

Well I use COMODO firewall and used it when my laptop was Vista. all I did was import/export the settings so they are the same.

Not long before your initial post, another guy with COMODO firewall had exactely the same issue.

He had tried everything, or so he thought.

Turning the firewalls made the problem go away instantly.

After that, he set the firewalls less restrictive and he's ok now.

Here is his conclusion, maybe you can PM him to ask which settings he changed.

http://www.sevenforums.com/network-sharing/23580-missing-network-devices-computers-2.html#post254653

good luck

 

[Tews]

Well I use COMODO firewall and used it when my laptop was Vista. all I did was import/export the settings so they are the same.

You can lead a horse to water, but that doesnt make him a duck!!