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    Question Windows machine taking out internet access


    Hi all,

    Iím having a really annoying issue with my home network. It works fine until my wifeís windows 10 laptop connects to it then around 80% of the time all internet connection for every device on the network goes down.

    Resetting network connection or ipconfig release / renew usually fixes it temporarily, but never lasts long. Iíve tried changing my network ip range in case itís some ip conflict issue, but all connected devices ips look fine.

    The error occurs on both WiFi and wired connection.

    The machine has all latest windows updates and driver updates for wireless and Ethernet adapters

    Machine details:
    - HP Win 10 home VS 1709
    - intel core i3 6006u 2GHz
    - Realtek RTL8723BE Wireless LAN 802.11
    - 8 GB RAM

    The machineís internet connection works perfectly when tethered to iPhone 4G connection.

    Other network devices working perfectly when this machine not connected:

    - MacBook Pro
    - HP Probook win 10 Pro
    - iPhone 7 & 7plus
    - Xbox one
    - Samsung Tv
    - iPad

    This error has occurred since we purchased this laptop several months ago through various Windows updates.

    Any help with this is much appreciated!

    Cheers,

    Si.
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    Some networking stack details would be nice. What do ipconfig/ifconfig/etc. show on the other devices when they are and are not working?
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    Thanks for the reply, I’ll provide this info tomorrow when I next replicate the issue.
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    If it's disrupting your entire network my first guess would be that it's IP is conflicting with your router's IP address. Check both of those for their IP settings.
    If I helped you out, show some love with some reputation, or tip with Bitcoins to 1N645HfYf63UbcvxajLKiSKpYHAq2Zxud
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    I'm not getting the error at the moment (typical), it definitely occurs more when my wife is using the laptop (I'm pretty sure she has some sort of electromagnetic field that messes with electronics), so I'm sure the problem will showup later today when she gets in.

    Here's problem machine ipconfig info - working:

    Code:
    Windows IP Configuration
     
     
    Ethernet adapter Ethernet 2:
     
       Media State . . . . . . . . . . . : Media disconnected
       Connection-specific DNS Suffix  . : Home
     
    Wireless LAN adapter Local Area Connection* 12:
     
       Media State . . . . . . . . . . . : Media disconnected
       Connection-specific DNS Suffix  . :
     
    Wireless LAN adapter WiFi:
     
       Connection-specific DNS Suffix  . : Home
       IPv6 Address. . . . . . . . . . . : 2a02:c7d:72ad:2c00:2841:cd95:e49f:3ed3
       IPv6 Address. . . . . . . . . . . : fd3d:c7df:101e:0:2841:cd95:e49f:3ed3
       Temporary IPv6 Address. . . . . . : 2a02:c7d:72ad:2c00:a0d0:32:c751:404d
       Temporary IPv6 Address. . . . . . : fd3d:c7df:101e:0:a0d0:32:c751:404d
       Link-local IPv6 Address . . . . . : fe80::2841:cd95:e49f:3ed3%7
       IPv4 Address. . . . . . . . . . . : 192.168.5.5
       Subnet Mask . . . . . . . . . . . : 255.255.255.0
       Default Gateway . . . . . . . . . : fe80::7e4c:a5ff:feac:16d0%7
                                           192.168.5.1
     
    Ethernet adapter Bluetooth Network Connection:
     
       Media State . . . . . . . . . . . : Media disconnected
       Connection-specific DNS Suffix  . :
     
    Tunnel adapter Teredo Tunneling Pseudo-Interface:
     
       Connection-specific DNS Suffix  . :
       IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:20f0:24d:fd21:3f06
       Link-local IPv6 Address . . . . . : fe80::20f0:24d:fd21:3f06%6
       Default Gateway . . . . . . . . . :
    Mac ifconfig info - working:

    Code:
    lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
    	options=1203<RXCSUM,TXCSUM,TXSTATUS,SW_TIMESTAMP>
    	inet 127.0.0.1 netmask 0xff000000 
    	inet6 ::1 prefixlen 128 
    	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 
    	nd6 options=201<PERFORMNUD,DAD>
    gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
    stf0: flags=0<> mtu 1280
    XHC20: flags=0<> mtu 0
    en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    	ether f4:5c:89:ac:ff:e3 
    	inet6 fe80::e9:d89c:67cc:9024%en0 prefixlen 64 secured scopeid 0x5 
    	inet 192.168.5.2 netmask 0xffffff00 broadcast 192.168.5.255
    	inet6 fd3d:c7df:101e::4e5:9a6d:b055:e9c7 prefixlen 64 autoconf secured 
    	inet6 fd3d:c7df:101e::b5f6:7839:bc97:6338 prefixlen 64 autoconf temporary 
    	inet6 2a02:c7d:72ad:2c00:1ce1:fb0:af3c:a18e prefixlen 64 autoconf secured 
    	inet6 2a02:c7d:72ad:2c00:bdc4:3418:ef5e:7987 prefixlen 64 autoconf temporary 
    	nd6 options=201<PERFORMNUD,DAD>
    	media: autoselect
    	status: active
    p2p0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 2304
    	ether 06:5c:89:ac:ff:e3 
    	media: autoselect
    	status: inactive
    awdl0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1484
    	ether f2:80:16:fb:67:9b 
    	inet6 fe80::f080:16ff:fefb:679b%awdl0 prefixlen 64 scopeid 0x7 
    	nd6 options=201<PERFORMNUD,DAD>
    	media: autoselect
    	status: active
    en1: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
    	options=60<TSO4,TSO6>
    	ether 6a:00:01:c2:e6:30 
    	media: autoselect <full-duplex>
    	status: inactive
    en2: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
    	options=60<TSO4,TSO6>
    	ether 6a:00:01:c2:e6:31 
    	media: autoselect <full-duplex>
    	status: inactive
    bridge0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    	options=63<RXCSUM,TXCSUM,TSO4,TSO6>
    	ether 6a:00:01:c2:e6:30 
    	Configuration:
    		id 0:0:0:0:0:0 priority 0 hellotime 0 fwddelay 0
    		maxage 0 holdcnt 0 proto stp maxaddr 100 timeout 1200
    		root id 0:0:0:0:0:0 priority 0 ifcost 0 port 0
    		ipfilter disabled flags 0x2
    	member: en1 flags=3<LEARNING,DISCOVER>
    	        ifmaxaddr 0 port 8 priority 0 path cost 0
    	member: en2 flags=3<LEARNING,DISCOVER>
    	        ifmaxaddr 0 port 9 priority 0 path cost 0
    	nd6 options=201<PERFORMNUD,DAD>
    	media: <unknown type>
    	status: inactive
    utun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 2000
    	inet6 fe80::87a3:ca93:8c5f:6001%utun0 prefixlen 64 scopeid 0xb 
    	nd6 options=201<PERFORMNUD,DAD>
    utun1: flags=80d1<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1406
    	inet 192.168.237.50 --> 192.168.237.50 netmask 0xffffff80 
    	inet6 fe80::f65c:89ff:feac:ffe3%utun1 prefixlen 64 scopeid 0xc 
    	inet6 fe80::93aa:3d53:c8eb:7e69%utun1 prefixlen 128 scopeid 0xc 
    	nd6 options=201<PERFORMNUD,DAD>
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    IFconfig Mac during error:

    Code:
    lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
    	options=1203<RXCSUM,TXCSUM,TXSTATUS,SW_TIMESTAMP>
    	inet 127.0.0.1 netmask 0xff000000 
    	inet6 ::1 prefixlen 128 
    	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 
    	nd6 options=201<PERFORMNUD,DAD>
    gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
    stf0: flags=0<> mtu 1280
    XHC20: flags=0<> mtu 0
    en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    	ether f4:5c:89:ac:ff:e3 
    	inet6 fe80::e9:d89c:67cc:9024%en0 prefixlen 64 secured scopeid 0x5 
    	inet 192.168.5.2 netmask 0xffffff00 broadcast 192.168.5.255
    	inet6 fd3d:c7df:101e::4e5:9a6d:b055:e9c7 prefixlen 64 autoconf secured 
    	inet6 fd3d:c7df:101e::b5f6:7839:bc97:6338 prefixlen 64 autoconf temporary 
    	inet6 2a02:c7d:72ad:2c00:1ce1:fb0:af3c:a18e prefixlen 64 autoconf secured 
    	inet6 2a02:c7d:72ad:2c00:bdc4:3418:ef5e:7987 prefixlen 64 autoconf temporary 
    	nd6 options=201<PERFORMNUD,DAD>
    	media: autoselect
    	status: active
    p2p0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 2304
    	ether 06:5c:89:ac:ff:e3 
    	media: autoselect
    	status: inactive
    awdl0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1484
    	ether f2:80:16:fb:67:9b 
    	inet6 fe80::f080:16ff:fefb:679b%awdl0 prefixlen 64 scopeid 0x7 
    	nd6 options=201<PERFORMNUD,DAD>
    	media: autoselect
    	status: active
    en1: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
    	options=60<TSO4,TSO6>
    	ether 6a:00:01:c2:e6:30 
    	media: autoselect <full-duplex>
    	status: inactive
    en2: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
    	options=60<TSO4,TSO6>
    	ether 6a:00:01:c2:e6:31 
    	media: autoselect <full-duplex>
    	status: inactive
    bridge0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    	options=63<RXCSUM,TXCSUM,TSO4,TSO6>
    	ether 6a:00:01:c2:e6:30 
    	Configuration:
    		id 0:0:0:0:0:0 priority 0 hellotime 0 fwddelay 0
    		maxage 0 holdcnt 0 proto stp maxaddr 100 timeout 1200
    		root id 0:0:0:0:0:0 priority 0 ifcost 0 port 0
    		ipfilter disabled flags 0x2
    	member: en1 flags=3<LEARNING,DISCOVER>
    	        ifmaxaddr 0 port 8 priority 0 path cost 0
    	member: en2 flags=3<LEARNING,DISCOVER>
    	        ifmaxaddr 0 port 9 priority 0 path cost 0
    	nd6 options=201<PERFORMNUD,DAD>
    	media: <unknown type>
    	status: inactive
    utun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 2000
    	inet6 fe80::87a3:ca93:8c5f:6001%utun0 prefixlen 64 scopeid 0xb 
    	nd6 options=201<PERFORMNUD,DAD>
    utun1: flags=80d1<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1406
    	inet6 fe80::f65c:89ff:feac:ffe3%utun1 prefixlen 64 scopeid 0xc 
    	inet 192.168.237.50 --> 192.168.237.50 netmask 0xffffff80 
    	inet6 fe80::99df:9c22:320b:5e8e%utun1 prefixlen 128 scopeid 0xc 
    	nd6 options=201<PERFORMNUD,DAD>

    IPconfig info from problem Windows machine during error:

    Code:
    Windows IP Configuration
    
    
    Ethernet adapter Ethernet 2:
    
       Media State . . . . . . . . . . . : Media disconnected
       Connection-specific DNS Suffix  . : Home
    
    Wireless LAN adapter Local Area Connection* 12:
    
       Media State . . . . . . . . . . . : Media disconnected
       Connection-specific DNS Suffix  . :
    
    Wireless LAN adapter WiFi:
    
       Connection-specific DNS Suffix  . : Home
       IPv6 Address. . . . . . . . . . . : 2a02:c7d:72ad:2c00:2841:cd95:e49f:3ed3
       IPv6 Address. . . . . . . . . . . : fd3d:c7df:101e:0:2841:cd95:e49f:3ed3
       Temporary IPv6 Address. . . . . . : 2a02:c7d:72ad:2c00:dc7d:a3b3:d746:f6a4
       Temporary IPv6 Address. . . . . . : fd3d:c7df:101e:0:dc7d:a3b3:d746:f6a4
       Link-local IPv6 Address . . . . . : fe80::2841:cd95:e49f:3ed3%7
       IPv4 Address. . . . . . . . . . . : 192.168.5.5
       Subnet Mask . . . . . . . . . . . : 255.255.255.0
       Default Gateway . . . . . . . . . : fe80::7e4c:a5ff:feac:16d0%7
                                           192.168.5.1
    
    Ethernet adapter Bluetooth Network Connection:
    
       Media State . . . . . . . . . . . : Media disconnected
       Connection-specific DNS Suffix  . :
    
    Tunnel adapter Teredo Tunneling Pseudo-Interface:
    
       Connection-specific DNS Suffix  . :
       IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:20f0:24d:fd21:3f06
       Link-local IPv6 Address . . . . . : fe80::20f0:24d:fd21:3f06%6
       Default Gateway . . . . . . . . . :
  12. #7
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    Originally Posted by kicken
    If it's disrupting your entire network my first guess would be that it's IP is conflicting with your router's IP address. Check both of those for their IP settings.
    Doesn't look like it Router IP is 192.168.5.1 and Windows machine (although not fixed) has been 192.168.5.5 every time I've checked it.
  14. #8
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    Seems fine. What happens if you ping 8.8.8.8 and google.com when it isn't working?
    And the network connection goes down meaning what? Can't connect? OS says it's not connected? OS says it doesn't have an internet connection?

    Also, check her laptop for malware just in case.
  16. #9
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    Originally Posted by requinix
    Seems fine. What happens if you ping 8.8.8.8 and google.com when it isn't working?
    And the network connection goes down meaning what? Can't connect? OS says it's not connected? OS says it doesn't have an internet connection?

    Also, check her laptop for malware just in case.
    Pinged google from my Mac during the error yesterday and it timed out. Connection to the network remains, but all internet browsing on all devices times out. Laptop should be clean (anti virus etc in place), but iíll Double check that Monday (Iím away this weekend).
  18. #10
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    Does it timeout when resolving google.com or when waiting for packets? And what about pinging 8.8.8.8?

    And what happens with
    Code:
    nslookup google.com (IP address of laptop)
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    Sorry for the delay, was away at the weekend.

    Pinging 8.8.8.8 timed out:

    Code:
    PING 8.8.8.8 (8.8.8.8): 56 data bytes
    Request timeout for icmp_seq 0
    Request timeout for icmp_seq 1
    Request timeout for icmp_seq 2
    Request timeout for icmp_seq 3
    Request timeout for icmp_seq 4
    Request timeout for icmp_seq 5

    Code:
    nslookup google.com
    Server:		192.168.5.1
    Address:	192.168.5.1#53
    
    Non-authoritative answer:
    Name:	google.com
    Address: 216.58.201.46
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    It's like something is messing with your routing. What does tracert -d 8.8.8.8 (sudo traceroute -n 8.8.8.8 on 'nix) show? It should go more-or-less directly from the computer to the router to the internet.

    Something or another on that laptop is installed and acting like a networking device that it shouldn't.
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    When it stops working, can you ping your router? Other devices on the local network? Your ISP's gateway/dns servers would be a good next level test also.

    Do both IPv4 and IPv6 go out? Try pinging ipv6.google.com (2607:f8b0:4008:80a::200e). People occasionally on the Comcast/Xfinity forums have had issues with IPv4 not working but IPv6 working fine. That shouldn't be something that would come/go with a particular device though.

    You could install something like Wireshark on the laptop and monitor traffic. Maybe it's hammering the network with broadcast packets and degrading everything. Something like this happened once at a company I worked for.
    If I helped you out, show some love with some reputation, or tip with Bitcoins to 1N645HfYf63UbcvxajLKiSKpYHAq2Zxud
  26. #14
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    Originally Posted by requinix
    It's like something is messing with your routing. What does tracert -d 8.8.8.8 (sudo traceroute -n 8.8.8.8 on 'nix) show? It should go more-or-less directly from the computer to the router to the internet.

    Something or another on that laptop is installed and acting like a networking device that it shouldn't.
    This is all while internet connection is working:

    Problem Laptop trace route:

    Code:
    Tracing route to 8.8.8.8 over a maximum of 30 hops
     
      1     2 ms     2 ms     1 ms  192.168.5.1
      2     *        *        *     Request timed out.
      3    23 ms    20 ms    22 ms  84.38.37.66
      4    21 ms    19 ms    20 ms  212.113.9.141
      5    29 ms    20 ms    20 ms  4.69.167.94
      6    20 ms    21 ms    19 ms  4.69.167.94
      7    20 ms    22 ms    22 ms  4.68.62.18
      8    37 ms    21 ms    20 ms  108.170.246.225
      9    21 ms    22 ms    22 ms  216.239.58.107
    10    23 ms    21 ms    21 ms  8.8.8.8
    Mac while problem machine connected:
    Code:
    traceroute to 8.8.8.8 (8.8.8.8), 64 hops max, 52 byte packets
     1  192.168.5.1  2.244 ms  1.774 ms  1.353 ms
     2  * * *
     3  * 84.38.37.66  181.071 ms  172.494 ms
     4  * 212.113.9.141  40.613 ms  44.780 ms
     5  4.69.167.90  65.116 ms
        4.69.167.94  57.632 ms
        4.69.167.102  51.199 ms
     6  4.69.167.90  42.194 ms
        4.69.167.94  71.109 ms
        4.69.167.90  30.526 ms
     7  4.68.62.18  31.386 ms  75.982 ms  54.401 ms
     8  108.170.246.225  53.205 ms  43.323 ms
        108.170.246.193  36.567 ms
     9  108.170.230.165  53.296 ms
        209.85.245.223  47.331 ms
        108.170.230.169  57.428 ms
    10  8.8.8.8  34.681 ms  51.606 ms  72.954 ms
    Mac without problem machine connected to network:

    Code:
    traceroute to 8.8.8.8 (8.8.8.8), 64 hops max, 52 byte packets
     1  192.168.5.1  1.618 ms  1.330 ms  1.818 ms
     2  * * *
     3  84.38.37.66  33.883 ms  34.829 ms  37.673 ms
     4  * 212.113.9.141  111.912 ms  156.681 ms
     5  4.69.167.94  34.159 ms  21.944 ms
        4.69.167.98  21.514 ms
     6  4.69.167.102  38.123 ms
        4.69.167.90  30.450 ms
        4.69.167.94  193.922 ms
     7  4.68.62.18  32.115 ms  48.928 ms  159.716 ms
     8  * * 108.170.246.193  67.152 ms
     9  108.170.230.161  72.154 ms
        72.14.238.239  164.055 ms
        216.239.58.67  26.201 ms
    10  8.8.8.8  289.481 ms  27.171 ms  147.414 ms
  28. #15
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    Originally Posted by kicken
    When it stops working, can you ping your router? Other devices on the local network? Your ISP's gateway/dns servers would be a good next level test also.

    Do both IPv4 and IPv6 go out? Try pinging ipv6.google.com (2607:f8b0:4008:80a::200e). People occasionally on the Comcast/Xfinity forums have had issues with IPv4 not working but IPv6 working fine. That shouldn't be something that would come/go with a particular device though.

    You could install something like Wireshark on the laptop and monitor traffic. Maybe it's hammering the network with broadcast packets and degrading everything. Something like this happened once at a company I worked for.
    I've tried pinging the router/other devices but can't remember the result right now. I'll try all this again next time the issue shows up (later today I expect).
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