Local Area Connection doesn't have a valid IP configuration

O

odin11

New member
I’m having intermittent network/internet problems on my dsl wired ethernet connection. Sometimes the internet works fine. Other times the internet is really slow or the network says unidentified network. I run the troubleshooter and it resets the local area connection adapter, giving the error that LAC didn’t have a valid IP configuration. But this fix doesn't seem to last more than a day or so.

Also, downloads with windows firewall and/or zonealarm firewall on fail or are interrupted, but not when firewall is turned off.

I’ve tried a clean install of Windows. Reinstalled drivers. Reset the modem. I tried ipconfig /renew. Nothing seems to work.

Windows 7 home premium 64 bit
Realtek RTL8111C Gigabit Ethernet
All my drivers are updated.

Windows IP Configuration

Host Name . . . . . . . . . . . . : PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : D0-67-E5-0A-33-6D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::16b:1c3f:5de9:7f0a%13(Preferred)
IPv4 Address. . . . . . . . . . . : 75.xx.xxx.xxx(Preferred)
Subnet Mask . . . . . . . . . . . : 255.xxxx.xxx.x
Lease Obtained. . . . . . . . . . : Thursday, January 19, 2012 9:22:04 AM
Lease Expires . . . . . . . . . . : Thursday, January 19, 2012 9:32:04 AM
Default Gateway . . . . . . . . . : 75.xx.xxx.x
DHCP Server . . . . . . . . . . . : 75.xx.xxx.x
DHCPv6 IAID . . . . . . . . . . . : 282093541
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-16-9E-4E-DD-D0-67-E5-0A-33-

DNS Servers . . . . . . . . . . . : 75.xx.xxx.x
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{0152406A-1509-450B-9BC3-97D3D916ABC5}:

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

Tunnel adapter 6TO4 Adapter:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft 6to4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2002:4b3b:e4e7::4b3b:e4e7(Preferred)
Default Gateway . . . . . . . . . : 2002:c058:6301::c058:6301
DNS Servers . . . . . . . . . . . : 75.xx.xxx.x
NetBIOS over Tcpip. . . . . . . . : Disabled

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. . . . . . . . . . . : 2001:0:4137:9e76:24d8:1c5:b4c4:1b18(Pre
rred)
Link-local IPv6 Address . . . . . : fe80::24d8:1c5:b4c4:1b18%11(Preferred)
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled
 

My Computer

Computer Manufacturer/Model Number
Dell Inspiron
OS
Windows 7 Home Premium 64 bit
temporary disable zonealarm and windows firewall. Same problems?
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0
Do you have another pc or laptop? plug it in on same cable and test
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0
How often do the problems occur?
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0
odin11 said:
Kaktussoft said:
How often do the problems occur?
Click to expand...

It happens just about every day and I have to reset my modem or run troubleshooting.
Click to expand...
So resetting the modem fixes the problem?
Just disable and enable the network adapter in network centre isn't enough?
Reboot fixes the proble as well (temporary)?
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0
odin11 said:
I’m having intermittent network/internet problems on my dsl wired ethernet connection. Sometimes the internet works fine. Other times the internet is really slow or the network says unidentified network. I run the troubleshooter and it resets the local area connection adapter, giving the error that LAC didn’t have a valid IP configuration. But this fix doesn't seem to last more than a day or so.

Also, downloads with windows firewall and/or zonealarm firewall on fail or are interrupted, but not when firewall is turned off.

I’ve tried a clean install of Windows. Reinstalled drivers. Reset the modem. I tried ipconfig /renew. Nothing seems to work.

Windows 7 home premium 64 bit
Realtek RTL8111C Gigabit Ethernet
All my drivers are updated.

Windows IP Configuration

Host Name . . . . . . . . . . . . : PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : D0-67-E5-0A-33-6D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::16b:1c3f:5de9:7f0a%13(Preferred)
IPv4 Address. . . . . . . . . . . : 75.xx.xxx.xxx(Preferred)
Subnet Mask . . . . . . . . . . . : 255.xxxx.xxx.x
Lease Obtained. . . . . . . . . . : Thursday, January 19, 2012 9:22:04 AM
Lease Expires . . . . . . . . . . : Thursday, January 19, 2012 9:32:04 AM
Default Gateway . . . . . . . . . : 75.xx.xxx.x
DHCP Server . . . . . . . . . . . : 75.xx.xxx.x
DHCPv6 IAID . . . . . . . . . . . : 282093541
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-16-9E-4E-DD-D0-67-E5-0A-33-

DNS Servers . . . . . . . . . . . : 75.xx.xxx.x
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{0152406A-1509-450B-9BC3-97D3D916ABC5}:

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

Tunnel adapter 6TO4 Adapter:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft 6to4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2002:4b3b:e4e7::4b3b:e4e7(Preferred)
Default Gateway . . . . . . . . . : 2002:c058:6301::c058:6301
DNS Servers . . . . . . . . . . . : 75.xx.xxx.x
NetBIOS over Tcpip. . . . . . . . : Disabled

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. . . . . . . . . . . : 2001:0:4137:9e76:24d8:1c5:b4c4:1b18(Pre
rred)
Link-local IPv6 Address . . . . . : fe80::24d8:1c5:b4c4:1b18%11(Preferred)
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled
Click to expand...
Is this the output when failing LAC?
IPv4 Address. . . . . . . . . . . : 75.xx.xxx.xxx
so win7 thinks you have a 75.... ip address
 

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0
No, I put the x's in to post it.
 

My Computer

Computer Manufacturer/Model Number
Dell Inspiron
OS
Windows 7 Home Premium 64 bit

My Computer

Computer type
Laptop
Computer Manufacturer/Model Number
ACER ASPIRE 5742G
OS
Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
CPU
Intel(R) Core(TM) i3 CPU M 370 @ 2.40GHz
Motherboard
Acer Aspire 5742G
Memory
4,00 GB
Graphics Card(s)
ATI Mobility Radeon HD 5400 Series
Sound Card
(1) AMD High Definition Audio Device (2) Realtek High Defi
Screen Resolution
1366 x 768 x 32 bits (4294967296 colors) @ 60 Hz
Hard Drives
WDC WD5000BEVT-22ZAT0
I'll have to check next time.
 

My Computer

Computer Manufacturer/Model Number
Dell Inspiron
OS
Windows 7 Home Premium 64 bit
I turned media streaming on in network settings and my internet connection hasn't failed so far. Hopefully this fixes the problem.
 

My Computer

Computer Manufacturer/Model Number
Dell Inspiron
OS
Windows 7 Home Premium 64 bit
My connection failed again. I brought up the ipconfig and got

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::16b:1c3f:5de9:7f0a%13
Autoconfiguration IPv4 Address. . : 169.254.127.10
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . : 99.50.187.1

Tunnel adapter isatap.{0152406A-1509-450B-9BC3-97D3D916ABC5}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :


Then I tried to renew my IP and received this error message:

An error occurred while renewing interface Local Area Connection : The requested address is not valid in its context.

The only fix to the problem was to run windows troubleshooter to reset the connection and renew the IP address. I have no idea how to permanently correct the problem.
 

My Computer

Computer Manufacturer/Model Number
Dell Inspiron
OS
Windows 7 Home Premium 64 bit
Totally uninstall ZoneAlarm: use the new ZoneAlarm Removal Tool: Click here http://download.zonealarm.com/bin/fr...load/clean.exe

Save to desktop, right click and "run as administrator" This tool will remove all ZoneAlarm products from your system.

Next, Copy and paste these lines in Note pad.

@Echo on
pushd\windows\system32\drivers\etc
attrib -h -s -r hosts
echo 127.0.0.1 localhost>HOSTS
attrib +r +h +s hosts
popd
ipconfig /release
ipconfig /renew
ipconfig /flushdns
netsh winsock reset all
netsh int ip reset all
shutdown -r -t 1
del %0

Save as flush.bat to your desktop.
Double click on the flush.bat file to run it.Vista and Windows 7... right click the .bat file and choose to run as Administrator. Your computer will reboot itself.

Let us know if this works.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Bruce ... somewhere in his 40's
OS
Windows 7 Ultimate 32bit SP1
CPU
Intel(R) Core(TM)2 Quad CPU @ 2.40GHz, 2400 MHz
Motherboard
INTEL/D975XBX2
Memory
4 GB
Graphics Card(s)
ATI Radeon HD 2600 Pro
Monitor(s) Displays
Samsung SyncMaster 914v
Screen Resolution
1280 x 1024
Hard Drives
2/500GB each ... ST3500630AS ATA Device.
One is not connected
PSU
Rocketfish 700 W
Case
G.Skill Gigabyte Chassis
Keyboard
Standard PS/2 Keyboard
Mouse
Microsoft PS/2 Mouse
Internet Speed
DSL
Antivirus
Avira Internet Security
Browser
IE 11
Other Info
ATI HDMI Audio
So far, so good. I'll post back if I have any problems. Thanks.
 

My Computer

Computer Manufacturer/Model Number
Dell Inspiron
OS
Windows 7 Home Premium 64 bit
Good! :)
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Bruce ... somewhere in his 40's
OS
Windows 7 Ultimate 32bit SP1
CPU
Intel(R) Core(TM)2 Quad CPU @ 2.40GHz, 2400 MHz
Motherboard
INTEL/D975XBX2
Memory
4 GB
Graphics Card(s)
ATI Radeon HD 2600 Pro
Monitor(s) Displays
Samsung SyncMaster 914v
Screen Resolution
1280 x 1024
Hard Drives
2/500GB each ... ST3500630AS ATA Device.
One is not connected
PSU
Rocketfish 700 W
Case
G.Skill Gigabyte Chassis
Keyboard
Standard PS/2 Keyboard
Mouse
Microsoft PS/2 Mouse
Internet Speed
DSL
Antivirus
Avira Internet Security
Browser
IE 11
Other Info
ATI HDMI Audio
After having more problems with the unidentified network error I found it to be due to a fault in the outside lines. The coil underground gets heated and breaks down. However, I had to go throught hell with my ISP to get them to come out and fix it correctly. Most of the people that work in these companies are the laziest, most unqualified, idiotic, and dishonest crooks that I've ever come across. And it's not just one of the companies, it's all of them. :mad:
 

My Computer

Computer Manufacturer/Model Number
Dell Inspiron
OS
Windows 7 Home Premium 64 bit
I have "Local Area Connection doesn't have a valid IP address."
It happens usually after computer wakes from sleep or hibernate.

Odin11, your post #14 has the same response from my cmd. Unfortunately, windows troubleshooter can't handle the issue. So it only lefts me reboot the router (linksys WRT120N).

Jacee, post #13. what those parameters do ? Are they safe to use any time the cited problem occurs ?
i have tried /release and /renew in that order thus far. Haven't resolved.

thanks for your support.
 

My Computer

OS
W7
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