Homegroups - "windows cannot access" 0x80070035

There are three W7 64 bit machines on our homegroup. Two work fine together and both of them can access the material on the problem 3rd machine as well as each other. However the third machine cannot access the material on either of the other two even though their icons and folders show under "Homegroup" on the problem 3rd machine. I have followed instructions Ultimate Troubleshooting Guide for Windows 7 HomeGroup Connection Issues and elsewhere on both the problem 3rd machine and one of the other two. No change. I have tried with the problem machine hard wired to the network and connected via wi-fi. Makes no difference. Clicking, in Homegroup on the 3rd machine on a shared folder on either of the other two machines gets the message "Windows cannot access", code as above, it also says "Network Path Not Found" and then offers a diagnosis routine which fails to identify the problem and then has you going round in circles.
The problem machine is running Home Premium as is one of the OK machines, the other is running Ultimate. All three are running AVG Internet Security 2012 which I have also disabled on the problem and ok machines separately and simultaneoulsy - it made no difference.

I am now stumped, having wasted half a day trying to figure it out. Any help appreciated.

androo235 said:

There are three W7 64 bit machines on our homegroup. Two work fine together and both of them can access the material on the problem 3rd machine as well as each other. However the third machine cannot access the material on either of the other two even though their icons and folders show under "Homegroup" on the problem 3rd machine. I have followed instructions Ultimate Troubleshooting Guide for Windows 7 HomeGroup Connection Issues and elsewhere on both the problem 3rd machine and one of the other two. No change. I have tried with the problem machine hard wired to the network and connected via wi-fi. Makes no difference. Clicking, in Homegroup on the 3rd machine on a shared folder on either of the other two machines gets the message "Windows cannot access", code as above, it also says "Network Path Not Found" and then offers a diagnosis routine which fails to identify the problem and then has you going round in circles.
The problem machine is running Home Premium as is one of the OK machines, the other is running Ultimate. All three are running AVG Internet Security 2012 which I have also disabled on the problem and ok machines separately and simultaneoulsy - it made no difference.

I am now stumped, having wasted half a day trying to figure it out. Any help appreciated.

Can you please post a screen shot of the ipconfig/all from the problem machine? :)

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

C:\Users\Andrew>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Laptop_de_Ione
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Peer-Peer
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : cable.virginmedia.net

Wireless LAN adapter Wireless Network Connection 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
Physical Address. . . . . . . . . : FE-55-F9-77-0B-C7
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . : cable.virginmedia.net
Description . . . . . . . . . . . : Atheros AR5B97 Wireless Network Adapter
Physical Address. . . . . . . . . : EC-55-F9-77-0B-C7
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::d12b:3903:cc5a:49e%12(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.2.13(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 20 August 2012 12:38:43
Lease Expires . . . . . . . . . . : 27 August 2012 14:58:03
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DHCPv6 IAID . . . . . . . . . . . : 334255609
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-16-E0-11-2E-B8-70-F4-8F-54-E9

DNS Servers . . . . . . . . . . . : 192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : cable.virginmedia.net
Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet
Physical Address. . . . . . . . . : B8-70-F4-8F-54-E9
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.cable.virginmedia.net:

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

Tunnel adapter Local Area Connection* 11:

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. . . . . . . . . . . : 2001:0:5ef5:79fd:1cb7:1076:a9f0:ebc1(Pref
erred)
Link-local IPv6 Address . . . . . : fe80::1cb7:1076:a9f0:ebc1%10(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

androo235 said:

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

C:\Users\Andrew>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Laptop_de_Ione
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Peer-Peer
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : cable.virginmedia.net

Wireless LAN adapter Wireless Network Connection 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
Physical Address. . . . . . . . . : FE-55-F9-77-0B-C7
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . : cable.virginmedia.net
Description . . . . . . . . . . . : Atheros AR5B97 Wireless Network Adapter
Physical Address. . . . . . . . . : EC-55-F9-77-0B-C7
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::d12b:3903:cc5a:49e%12(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.2.13(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 20 August 2012 12:38:43
Lease Expires . . . . . . . . . . : 27 August 2012 14:58:03
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DHCPv6 IAID . . . . . . . . . . . : 334255609
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-16-E0-11-2E-B8-70-F4-8F-54-E9

DNS Servers . . . . . . . . . . . : 192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : cable.virginmedia.net
Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet
Physical Address. . . . . . . . . : B8-70-F4-8F-54-E9
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.cable.virginmedia.net:

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

Tunnel adapter Local Area Connection* 11:

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. . . . . . . . . . . : 2001:0:5ef5:79fd:1cb7:1076:a9f0:ebc1(Pref
erred)
Link-local IPv6 Address . . . . . : fe80::1cb7:1076:a9f0:ebc1%10(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

How many more of those tunnel adaptors are showing up in the ipconfig?

That's the complete ipconfig/all so no more than you see there. I've don't know why I have tunnel adapters, don't they have something to do with VPN. I don't use VPN.

Could it be because I have two routers, one is to provide a WEP wireless network (a K-Corp, whoever they were, KLG-575) - used by my sons non-WPA games consoles. This sits after the cable modem. Then I have virginmedia's D-Link DIR-615 router which is WPA compliant and is my main network. They are in that order (cable modem, WEP router, WPA router) as I believe this means that a hack of my WEP network would still leave the WPA one secure.

androo235 said:

That's the complete ipconfig/all so no more than you see there. I've don't know why I have tunnel adapters, don't they have something to do with VPN. I don't use VPN.

Could it be because I have two routers, one is to provide a WEP wireless network (a K-Corp, whoever they were, KLG-575) - used by my sons non-WPA games consoles. This sits after the cable modem. Then I have virginmedia's D-Link DIR-615 router which is WPA compliant and is my main network. They are in that order (cable modem, WEP router, WPA router) as I believe this means that a hack of my WEP network would still leave the WPA one secure.

The tunnel adaptors are used for more than that and often times having or acquiring too many of them will cause connection problems exactly as you are describing.

You would be far better served going from your modem directly to your main routers WAN port, and only use the second router if it has an "access point" mode, or at the very least with DHCP disabled though it may require other adjustments if there isn't an A/P mode.

The second router with the access point mode would simply plug into one of your main routers LAN ports or a LAN port on a standard switch. You don't want to piggy back routers like you are doing now as it usually ends up causing problems, even if you think the settings are correct it's just not meant to be.

The routers are arranged as they are as I understood that if the WEP router were to be off a LAN port of the WPA router then the WEP network would be inside the WPA network and so breaking into the WEP network would effectively break into the WPA network.

The arrangement I have has worked fine for a couple of years now and so if it is not causing the current problem I would be happy to continue with it. For now then I'll just remove the WEP router completely (my son doesn't use his WEP only devices that often now) and see if that solves the problem. It's getting late here now (UK) so I will do that tomorrow and post success or not here with a new ipconfig/all too if necessary.

androo235 said:

The routers are arranged as they are as I understood that if the WEP router were to be off a LAN port of the WPA router then the WEP network would be inside the WPA network and so breaking into the WEP network would effectively break into the WPA network.

The arrangement I have has worked fine for a couple of years now and so if it is not causing the current problem I would be happy to continue with it. For now then I'll just remove the WEP router completely (my son doesn't use his WEP only devices that often now) and see if that solves the problem. It's getting late here now (UK) so I will do that tomorrow and post success or not here with a new ipconfig/all too if necessary.

The WEP router is connected to a LAN port from the router and set up as an A/P, this would handle the WEP wireless connections only because it's set up with it's own SSID and password.

The main router would be the one handling the DHCP IP assignments, plus it's own wireless connection and most of the other stuff.

This is how most normal networks are set up and is usually the best way to add a wireless A/P in most cases.

OK. The WEP router is out of the equation now. Same problem still apparent, here's a new ipconfig/all from the problem machine.

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

C:\Users\Andrew>ipconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Laptop_de_Ione
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Peer-Peer
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : cable.virginmedia.net

Wireless LAN adapter Wireless Network Connection 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
Physical Address. . . . . . . . . : FE-55-F9-77-0B-C7
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . : cable.virginmedia.net
Description . . . . . . . . . . . : Atheros AR5B97 Wireless Network Adapter
Physical Address. . . . . . . . . : EC-55-F9-77-0B-C7
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::d12b:3903:cc5a:49e%12(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.2.13(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 21 August 2012 09:39:17
Lease Expires . . . . . . . . . . : 28 August 2012 12:39:33
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DHCPv6 IAID . . . . . . . . . . . : 334255609
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-16-E0-11-2E-B8-70-F4-8F-54-E9

DNS Servers . . . . . . . . . . . : 192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : cable.virginmedia.net
Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet
Physical Address. . . . . . . . . : B8-70-F4-8F-54-E9
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.cable.virginmedia.net:

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

Tunnel adapter Local Area Connection* 11:

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. . . . . . . . . . . : 2001:0:5ef5:73b8:4b8:1066:ae95:9799(Prefe
rred)
Link-local IPv6 Address . . . . . : fe80::4b8:1066:ae95:9799%10(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter isatap.{6ACD12EE-03F4-4272-B231-D6334120ACF7}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

C:\Users\Andrew>

I'd have to place the blame on AVG at this point. Uninstalling is often times the only way to be sure.