Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Unknown Loss of Browsing/E-mail Connectivity...

14 May 2011   #1
SuperFlyBoy

Windows 7 Pro x64
 
 
Unknown Loss of Browsing/E-mail Connectivity...

Hi,

I have a Toshiba M750 TabletPC running Win7 Pro 64-bit.

Never had a problem until a few days ago, possibly until I installed SpiderOak's latest version, 9810. (SpiderOak is a backup/sharing software similar to Dropbox)

I'm using IPv4 with the following settings:

Fixed IP of 192.168.200.192
Subnet: 255.255.255.0
Gateway: 192.168.200.100

DNS1: 192.168.200.144 (our SBS2003 server's IP)
DNS2: 208.67.220.220 (OpenDNS)

After I have used the computer for a day or two, IE and FF stop being able to browse, period.

This is both on a home network, as well as when using Wi-Fi networks out of the house. Haven't used the laptop in the office so far.

I have tracerouted site names (not IP addresses, thus DNS resolves), which I am able to do successfully.

SpiderOak is not running, but possibly any modifications to the OS/networking might have changed things. However, this could also not be a result of SpiderOak, but rather Windows Updates as well...

Other computers on the network (home) are able to browse the internet.

I am only able to browse the net and get e-mail (Outlook) when I log into a VPN connection, and then it works fine.

I have tried putting in DNS1 as the gateway IP, like all the other machines have, but the laptop cannot browse or get e-mail access - no idea why.

I have tried disabling the LAN connection in Win7 and then restarting it, but this has no effect.

No recent updates of LAN connection/drivers have been installed either.

Any feedback is appreciated.

Amazingly - the problem went away after 30-40 minutes - don't know why! Is there a problem with Win7 that I don't know about??

ipconfig details:

Windows IP Configuration

Host Name . . . . . . . . . . . . : M750
Primary Dns Suffix . . . . . . . : xxxx.local
Node Type . . . . . . . . . . . . : Mixed
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : xxxx.local

Ethernet adapter Local Area Connection 15:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : TAP-Win32 Adapter V9
Physical Address. . . . . . . . . : xx-xx-xx-xx-xx-xx
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Mobile Broadband adapter Mobile Broadband Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : TOSHIBA F3507g Mobile Broadband Network A
dapter
Physical Address. . . . . . . . . : xx-xx-xx-xx-xx-xx
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
Physical Address. . . . . . . . . : xx-xx-xx-xx-xx-xx
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection 3:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Fortinet virtual adapter
Physical Address. . . . . . . . . : xx-xx-xx-xx-xx-xx
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) WiFi Link 5100 AGN
Physical Address. . . . . . . . . : xx-xx-xx-xx-xx-xx
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) 82567LM Gigabit Network Connecti
on
Physical Address. . . . . . . . . : xx-xx-xx-xx-xx-xx
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.200.192(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.200.100
DNS Servers . . . . . . . . . . . : 192.168.200.144
208.67.220.220
NetBIOS over Tcpip. . . . . . . . : Enabled


My System SpecsSystem Spec
.
14 May 2011   #2
hjonesMCT

Win7 Ultimate x64, Server 2008 R2
 
 

Hi there!

Is this a work machine? Do you get Group Policy updates to it?

Also, check your proxy settings in IE. Unless you have one configured for work, this should be set to automatically detect settings.

Heather

My System SpecsSystem Spec
14 May 2011   #3
SuperFlyBoy

Windows 7 Pro x64
 
 

Quote   Quote: Originally Posted by hjonesMCT View Post
Hi there!

Is this a work machine? Do you get Group Policy updates to it?

Also, check your proxy settings in IE. Unless you have one configured for work, this should be set to automatically detect settings.
Hi Heather,

Thanks for the prompt reply.

Not sure about the Group Policy updates to the machine - we use a SBS2003 server in the office, but I tend to be connected outside the office most of the time and use the laptop independently of Exchange - actually completely independently of Exchange.

I have configured the server, but have limited knowledge of connectivity with Win7 machines. (and possibly XP ones we normally use - this Win7 machine is basically a test)

Note that both my IEs - 64-bit and 32-bit have the automatically detect settings enabled.
My System SpecsSystem Spec
.

14 May 2011   #4
hjonesMCT

Win7 Ultimate x64, Server 2008 R2
 
 

Hmm.

If you think SpiderOak *may* be the problem, have you tried rolling back to an earlier restore point to get rid of it and reconfigure your system to its last known good configuration?

My System SpecsSystem Spec
Reply

 Unknown Loss of Browsing/E-mail Connectivity...




Thread Tools




Similar help and support threads
Thread Forum
Sudden loss of internet connectivity
Two days ago I lost internet connectivity suddenly on my desktop (Dell XPS 630i, onboard Nvidia network controller, running windows 7 Home Premium 64bit) and have been unable to restore it. As my laptop (winXP sp3) can still connect to the internet and the router settings have not been changed...
Network & Sharing
WiFi connectivity loss - Win 7?
I seem to have connectivity loss on a regular basis with Win 7. It seems to loos connection to the network. I have experience this on two different computers with Win 7...anyone else having this problem?
Network & Sharing
Loss of wireless connectivity
All of a sudden, my wireless adaptor went offline and I wasn't able to detect any wireless networks in the area.. Any steps to take to solve the issue? Thx in advance ^^
Network & Sharing
Loss of network connectivity after a few seconds
Just upgraded to 7 from Vista and have immediately faced a number of issues. For starters, and relevant to this forum, my internet connectivity. After a restart I can connect to my wireless network, but after less than 10 seconds the computer looses connectivity, telling me suddenly that I have...
Network & Sharing
loss of wireless connectivity
I was able connect to my dlinl dgl4500, prior to having some java issues. I fixed the java problem, but now i am only able to connect via cat5 cable. The system can not connect to the router, & can't find the problem. I am at wits end, regarding this problem.
Hardware & Devices
Loss of network connectivity
Heya, This has been an issue since I upgraded to 7201. It isn't constant, and seems to be worse when I'm downloading large files, especially multiple files from one source (like an album in iTunes). It is fixed by release/renew (or just letting Diagnostics do that). If I'm not using a lot of...
Network & Sharing


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 10:59.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App