Unidentified Network/Internet access

[obssc]

Did a forum search and could not find my particular problem.

I have a small business network (15) running through a Linksys RVS4000 router with DHCP enabled.

One workstation will connect out to the internet upon reboot or disabling/enabling the NIC, but shortly thereafter disconnects. It does, however, maintain seeing all the workgroup PC's and accessing mapped drives. The IP address and gateway are obviously legit when checked.

I have tried most all of the suggestions in other threads with similar issues (ipconfig release/renew, dnsflush, system restore), including restarting cable modem and router, but the darn thing keeps flipping to unknown network and cutting off internet access.

Any suggestions? Thanks.

 

[obssc]

Did a forum search and could not find my particular problem.

I have a small business network (15) running through a Linksys RVS4000 router with DHCP enabled.

One workstation will connect out to the internet upon reboot or disabling/enabling the NIC, but shortly thereafter disconnects. It does, however, maintain seeing all the workgroup PC's and accessing mapped drives. The IP address and gateway are obviously legit when checked.

I have tried most all of the suggestions in other threads with similar issues (ipconfig release/renew, dnsflush, system restore), including restarting cable modem and router, but the darn thing keeps flipping to unknown network and cutting off internet access.

Any suggestions? Thanks.

Well, I've tried everything I can think of from suggestions on this board and others, including system restore, reinstalling the NIC, removing firewall and all security (Microsoft Security) moving to another location, windsock reset, ip reset.....still cuts off after ~5 minutes. (I've left some things off I'm sure)

Any help would be appreciated. Thanks.

 

[chev65]

Did a forum search and could not find my particular problem.

I have a small business network (15) running through a Linksys RVS4000 router with DHCP enabled.

One workstation will connect out to the internet upon reboot or disabling/enabling the NIC, but shortly thereafter disconnects. It does, however, maintain seeing all the workgroup PC's and accessing mapped drives. The IP address and gateway are obviously legit when checked.

I have tried most all of the suggestions in other threads with similar issues (ipconfig release/renew, dnsflush, system restore), including restarting cable modem and router, but the darn thing keeps flipping to unknown network and cutting off internet access.

Any suggestions? Thanks.

Well, I've tried everything I can think of from suggestions on this board and others, including system restore, reinstalling the NIC, removing firewall and all security (Microsoft Security) moving to another location, windsock reset, ip reset.....still cuts off after ~5 minutes. (I've left some things off I'm sure)

Any help would be appreciated. Thanks.

I would need to see a screen shot of the ipconfig/all form this machine in order to help you.

 

[Parman]

Have you attempted to update the firmware on the router?

 

[obssc]

Have you attempted to update the firmware on the router?

No, all other machines on the network have full access and this specific machine still has access to all network drives. I have restarted the router and modem and all network PC's.

Thanks.

 

[obssc]

Did a forum search and could not find my particular problem.

I have a small business network (15) running through a Linksys RVS4000 router with DHCP enabled.

One workstation will connect out to the internet upon reboot or disabling/enabling the NIC, but shortly thereafter disconnects. It does, however, maintain seeing all the workgroup PC's and accessing mapped drives. The IP address and gateway are obviously legit when checked.

I have tried most all of the suggestions in other threads with similar issues (ipconfig release/renew, dnsflush, system restore), including restarting cable modem and router, but the darn thing keeps flipping to unknown network and cutting off internet access.

Any suggestions? Thanks.

Well, I've tried everything I can think of from suggestions on this board and others, including system restore, reinstalling the NIC, removing firewall and all security (Microsoft Security) moving to another location, windsock reset, ip reset.....still cuts off after ~5 minutes. (I've left some things off I'm sure)

Any help would be appreciated. Thanks.

I would need to see a screen shot of the ipconfig/all form this machine in order to help you.

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Windows\system32>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : *****-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : ******.net

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : *****No, .net
Description . . . . . . . . . . . : Intel(R) 82578DC Gigabit Network Connecti
on
Physical Address. . . . . . . . . : 38-60-77-56-40-34
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::7d1a:91eb:7684:fe52%14(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.8(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Friday, February 08, 2013 10:27:52 AM
Lease Expires . . . . . . . . . . : Saturday, February 09, 2013 10:37:29 AM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 288907383
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-16-B0-AA-BA-38-60-77-56-40-34

DNS Servers . . . . . . . . . . . : 68.105.28.17
68.105.29.17
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.oc.cox.net:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : ******.net
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:9d38:6ab8:2c:1ab1:3f57:fef7(Prefer
red)
Link-local IPv6 Address . . . . . : fe80::2c:1ab1:3f57:fef7%12(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

C:\Windows\system32>

Thanks!

 

[chev65]

Well, I've tried everything I can think of from suggestions on this board and others, including system restore, reinstalling the NIC, removing firewall and all security (Microsoft Security) moving to another location, windsock reset, ip reset.....still cuts off after ~5 minutes. (I've left some things off I'm sure)

Any help would be appreciated. Thanks.

I would need to see a screen shot of the ipconfig/all form this machine in order to help you.

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Windows\system32>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : *****-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : ******.net

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : *****No, .net
Description . . . . . . . . . . . : Intel(R) 82578DC Gigabit Network Connecti
on
Physical Address. . . . . . . . . : 38-60-77-56-40-34
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::7d1a:91eb:7684:fe52%14(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.8(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Friday, February 08, 2013 10:27:52 AM
Lease Expires . . . . . . . . . . : Saturday, February 09, 2013 10:37:29 AM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 288907383
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-16-B0-AA-BA-38-60-77-56-40-34

DNS Servers . . . . . . . . . . . : 68.105.28.17
68.105.29.17
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.oc.cox.net:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : ******.net
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:9d38:6ab8:2c:1ab1:3f57:fef7(Prefer
red)
Link-local IPv6 Address . . . . . : fe80::2c:1ab1:3f57:fef7%12(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

C:\Windows\system32>

Thanks!

No problems visible here. But I'm sure this is when the connection is working.

Have you tried to start up in safe mode with networking to determine if an installed program or A/V software is causing the problem?

If the problem goes away in safe mode then most likely the problem is caused by something installed on the system.

Have you been to the Windows Update Center recently?

Have you tried to update the Intel driver from the Intel site directly?

Of course updating the Intel driver is the easiest option here, there appears to be a new driver 1-11-13 for your Intel adaptor. Choose the correct Op system when you get there.

http://downloadcenter.intel.com/Sea...ductProduct=Intel®+82578+Gigabit+Ethernet+PHY

 

[obssc]

Actually that screen shot was when it was not working.

Yes, I did check it out in safe-mode. Same issues.

If I renew the IP address it will work for a few minutes and click off.

Thanks.

 

[chev65]

Actually that screen shot was when it was not working.

Yes, I did check it out in safe-mode. Same issues.

If I renew the IP address it will work for a few minutes and click off.

Thanks.

Please update the driver from the Intel site. I added that link to my last post.

Is there anything from Apple installed on this system like iTunes?

 

[obssc]

Driver updated....

There is no iTunes on the PC in question.

Thanks.

edit: Driver update did not solve.

 

[Parman]

Try running

system file checker to sure the system file integrity.

Open elevated command prompt.
Enter:
sfc /scannow


http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html

 

[chev65]

Driver updated....

There is no iTunes on the PC in question.

Thanks.

edit: Driver update did not solve.

When you look at Add/remove programs, does it list any type of Intel software there?

The so called wireless connection software's can cause problems sometimes.

 

[obssc]

Try running

system file checker to sure the system file integrity.

Open elevated command prompt.
Enter:
sfc /scannow


http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html

Thanks for that. I ran it and no problems were found.

 

[obssc]

Driver updated....

There is no iTunes on the PC in question.

Thanks.

edit: Driver update did not solve.

When you look at Add/remove programs, does it list any type of Intel software there?

The so called wireless connection software's can cause problems sometimes.

Yes. They are:

Intel Desktop Utilities
Intel Integrator Assistant
Intel Network Connections
Intel Control Center
Intel HD Graphics Driver
Intel Management Engine Components

Thanks.

 

[chev65]

Driver updated....

There is no iTunes on the PC in question.

Thanks.

edit: Driver update did not solve.

When you look at Add/remove programs, does it list any type of Intel software there?

The so called wireless connection software's can cause problems sometimes.

Yes. They are:

Intel Desktop Utilities
Intel Integrator Assistant
Intel Network Connections
Intel Control Center
Intel HD Graphics Driver
Intel Management Engine Components

Thanks.

Please uninstall the Intel Network Connections software.

 

[obssc]

When you look at Add/remove programs, does it list any type of Intel software there?

The so called wireless connection software's can cause problems sometimes.

Yes. They are:

Intel Desktop Utilities
Intel Integrator Assistant
Intel Network Connections
Intel Control Center
Intel HD Graphics Driver
Intel Management Engine Components

Thanks.

Please uninstall the Intel Network Connections software.

OK...I did that, but as expected I now have no LAN connection either.
I already downloaded the update from the Intel site and reloaded that last week, so not sure what next.
Thanks.

 

[chev65]

Ok, I'll assume that you reinstalled the software.

The only possibility is that something is blocking the connection, most likely an A/V software which may be installed on the system or was removed at one time.

Have you tried to start up in safe mode with Networking to see if the problem persists?


This Unidentified Network problem is fairly common but there are many solutions. The link below mentions one type of fix where you type the default gateway into the IPv4 properties.

There are many other solutions in the comment section below the main article.

http://pocketpccentral.net/blog/200...cess-no-internet-connection-problem-resolved/

 

[obssc]

Ok, I'll assume that you reinstalled the software.

The only possibility is that something is blocking the connection, most likely an A/V software which may be installed on the system or was removed at one time.

Have you tried to start up in safe mode with Networking to see if the problem persists?


This Unidentified Network problem is fairly common but there are many solutions. The link below mentions one type of fix where you type the default gateway into the IPv4 properties.

There are many other solutions in the comment section below the main article.

Windows 7 Unidentified Network, Limited Access, No Internet Connection Problem Resolved

Thanks Chev...I will go through those.

I did try the safe-mode with Net last week, and the same thing.
I have Microsoft Security Essentials only on this PC...It's the only AV that has been installed. I did turn that off also, but same results. Turned Windows Firewall off also.

It's pretty consistent that it gives me ~5 minutes of internet access, then cuts off. All mapped drives on the LAN remain working.

Thanks.

 

[chev65]

This 5 minute time limit is very strange and probably impossible to track down the source, usually something installed on the system would cause this but safe mode with networking usually will weed that out.

You might try running my IPresetAll file, in case it's a strange problem with the network stack or something else, this will reset everything in the network. Just unzip and run the file, your machine will reboot itself.