Windows cannot discover any computer or device


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  • 1. Find my network key
    Hi - I've been trying to add a new computer to my secure wireless network at home, but I can't for the life of me remember what the network key is, so haven't been able to enter it on the new computer. What can I do to find my network key?? I've tried to get around this by creating a "new network" using my existing connection, and entering a new network key for this connection, but this doesn't work. Then, if I follow the Wireless Setup Wizard, it doesn't provide me with the "add computer to network" option: only the "set-up new network" option. Please help! Thanks very much Liam
  • 2. wrtsl54gs & Vista
    has anyone encountered a problem connecting to their shares on the Linksys Wireless-G Media Storage Link Router, when i try to connect to the shares for the first time and put in my password infomation, i am unable to log in to the shares. If i am simply trying to login to the administrative pages of the router there is no problem, but i can't login to access the shared exteral harddrives.
  • 3. File move problem on network share with RC2
    When moving files on a network share on a Win2003 R2 server from a Vista RC2 client, the files are being copied rather than moved. E.G. Moving 1.4Gb of files from a directory to its parent takes about two minutes as the files are actually copied before being deleted from the source dir. Performing exactly the same move between the same directories on the same share from a WinXP client is instantaneous as the files are just moved and not copied. Don't know if the problem happened with RC1 as well... Nick
  • 4. Simply share C; on my LAN
    Such mundane tasks and I find myself going round and round and round. I have a small Microsoft Network, (ISDN Modem and Router hub), and I have my new RC1 Vista installation. I can see my other XP computer from the Vista and even go into its folders BUT, I cannot copy. delete etc from the Vista to the XP computer. From the XP computer, I can see the Vista computer BUT NOT get into any of it. On the Vista machine, when I bring up my Local Disk C: Properties window, the SHARE button is greyed out. How can I enable this greyed out button?????? I have searched and searched and searched and only been shown useless information which has no relation to my problem. I feel that Microsoft is missing out on something here. LANs in private dwellings are common place now and there should be a whole set of screens which are devoid of any reference to Internet so that the 'silly' user can understand what he is doing and have reference only to the things that there is a good chance that he will know when he is trying to setup his LAN. On a home network, the fact is that the users will probably want to give 100% access to all the computers on the network. I see no screen or set of screens to do this. Somehow, I feel that the screens provided have been built by networking people and have not passed the most basic Human Engineering tests to see how they are understood by the 'silly' user.
  • 5. Wirelesss
    I am also having the same problem. When I installed the vista beta I am no longer able to establish wilreless network. I also don't have any sound devices when I installed Vista over XP. As I'm technically challenged I'm become fraustrated and want to uninstall Vista beta? Help somebody please... Thanks -- Christopher

Windows cannot discover any computer or device

Postby Y19ocjFz » Sat, 09 Dec 2006 11:24:00 GMT

I am running Vista Enterprise (final version) in a domain environment I have 
turned on the Link-Layer Topology Discovery in local gp and domain gpo but I 
still get the error "Windows cannot discover any computer or device" I can 
browse in explorer to every machine on the network but it seems to want to 
communciate with

I also do not get a full connection to the internet in Network and Sharing 
Center.  I can see my domain and I can connect to the internet and other PC's 
but when I try to repair the connection from domain to internet I get a 
"Windows cannot communicate with ( the ping 
was successful but there was no response. I know this is because we are 
behind a Firewall but surely MS has thought of this and has a way around this?

Re: Windows cannot discover any computer or device

Postby Bruce Sanderson » Tue, 19 Dec 2006 15:52:38 GMT

Hmm, puzzling!  I don't have an exact answer, but perhaps there's something 
here that might give you some clues.

Not sure about the "cannot discover any computers" or "do not get a full 
connection to the internet in Network and Sharing", but none of  (well, none 
that I know of!) the Microsoft servers respond to "ping" requests, so the 
lack of response to ping from doesn't necessarily tell you 

Try another destination for ping, such as or

I turned on both those settings on my small domain at home (single LAN) for 
my Vista workstations and the "Network map" now displays and shows all of 
the Vista computers (before turning on these settings, I got the message 
that the network map was suppressed by default in the domain).  The actual 
"map" only shows "Vista -> Gateway -> Internet", but the other computers 
(including the Windows Server 2003 R2 Domain Controller) are listed at the 
bottom as "The following discovered device(s) can not be placed in the 

Have you verified that the GPO containing the settings is in fact applied to 
the Vista computer(s) using the gpresult command or the Group Policy Results 
wizard?  I assume you have a check mark in the "Allow operation while in 
domain" check box for both settings.

Also, check that the Network Discovery exception is enabled in the Windows 
Firewall configuration is Enabled.

What do you mean by "do not get a full connection to the internet in Network 
and Sharing"?  The only time I've seen that sort of thing (e.g. limited 
network connectivity) is when the computer could not get an IP address from 
DHCP, but then I would expect you wouldn't have domain connectivity either.

My router has a built in firewall and does NAT as well, so perhaps the issue 
is not related to the "firewall".
Bruce Sanderson MVP Printing

It is perfectly useless to know the right answer to the wrong question.

Re: Windows cannot discover any computer or device

Postby Bruce Sanderson » Thu, 21 Dec 2006 08:54:21 GMT

orry, I'm not familiar with "proxy" servers etc. Here's something to try,
if you haven't already, in IE, click Tools, Internet Options, select the
Connections tab, click LAN settings. There's a spot there for configuring a
"proxy server".

If you are in a Windows Domain, presumably the DNS server (often on the same
server as the Domain Controller role) is doing the nslookups for you, so you
don't need "Internet connectivity" from the Vista workstation itself to do

I'm going to be out of town and most likely newsgroup incomunicado for about
10 days.
Bruce Sanderson MVP Printing

It is perfectly useless to know the right answer to the wrong question.

"c_hr1s" < XXXX@XXXXX.COM > wrote in message
news: XXXX@XXXXX.COM ...

Re: Windows cannot discover any computer or device

Postby pgn674 » Tue, 15 Apr 2008 02:24:59 GMT

Hey, future dwellers. If you've found this thread because you're getting
the "Cannot communicate with" error, I finally found
something for me that worked. Microsoft's 'KB937168'
( http://www.**--****.com/ ) describes a Winsock bug after
configuring Internet Connection Sharing, and gives a hotfix for it. You
have to request it, since it's not production quality yet I guess, but
they'll send you a link to it if you ask like the article describes.
This worked for me, and it might work for you, too.

Posted via  http://www.**--****.com/ 

Re: Windows cannot discover any computer or device

Postby Robert L. (MS-MVP) » Tue, 15 Apr 2008 06:50:30 GMT

Thank you for sharing your experience with us.

Networking, Internet, Routing, VPN Troubleshooting on
How to Setup Windows, Network, VPN & Remote Access on

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3.Vista computer does not discover XP computers

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4.Easy way to discover device model via SNMP ?


I am writing a management software that would provide some
basic info about the device, monitor some preconfigured 
variables etc. I was under the impression that detecting
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of a correct oid (entPhysicalModelName). Everything worked
great for all of my cats: 2900, 3500, 2950, 3750 series,
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question here is there an esay way (the one that would work
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5.Discovering DHCP linux device


I have built a small linux machine that I take with me to work on
customer's sites, but one thing I would like is a way to detect the
machine on their network.

If I were the systems administrator there, I could go through the DHCP
server logs and find it.  But I'm not, and it just seems a little
unprofessional to have to ask for help to find my own hardware.

I know I could sniff the traffic and look for DHCP transactions, but
this is (by and large) a one time event which means I have to be
watching while the thing comes online.  And it is again a little
unprofessional as it is quite cumbersome to be poring through sniffer
data to find my own hardware.

What I would do is write a script with netcat that broadcasts the
device's presence periodically, and have another application on my
laptop to listen for these broadcasts.  As long as we're on the same
LAN I should be able to detect those broadcasts, and then I will know
the IP to manage the machine.

I can create this script, but I'm posting this to see if there are any
linux projects already underway that meet my requirements.  I know
that my NAS (Infrant) uses a similar approach to managing those
systems, so something like that would do the trick.



6. discovering the ip address of a device

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8. Problems discovering devices on the LAN



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