Windows 8 and 8.1 Forums


IP Settings Can't Be Changed After Manually Set

  1. #11


    Posts : 42
    Windows 8.1 Pro x64 / Windows 7 x64


    It's got nothing to do with there being no default gateway. I can punch in the same numbers as what the DHCP server hands out and then go back in and still can't change it back to DHCP.

    You only need a default gateway when your NIC needs to request sites on a different subnet, which isn't the case here. I am assigning something like 192.168.0.1 and only trying to communicate with addresses on that subnet, so a gateway is not needed.

    The problem doesn't exist in Windows 7.

      My System SpecsSystem Spec

  2. #12


    Quote Originally Posted by muzicman82 View Post
    It's got nothing to do with there being no default gateway. I can punch in the same numbers as what the DHCP server hands out and then go back in and still can't change it back to DHCP.

    You only need a default gateway when your NIC needs to request sites on a different subnet, which isn't the case here. I am assigning something like 192.168.0.1 and only trying to communicate with addresses on that subnet, so a gateway is not needed.

    The problem doesn't exist in Windows 7.
    So the only problem is that IPv4 interface won't allow you to choose DHCP anymore.

    Here is what I get when I Google this problem.

    For Windows 7 network types, the secret lies in the GATEWAY entry. Any network you connect on that doesn't have a DEFAULT GATEWAY provided with, becomes PUBLIC and you cannot change it's type.

    So in with Windows 8 you need to have a Default Gateway defined in order to change the network type to "Private" which then should allow you to enable DHCP again.
      My System SpecsSystem Spec

  3. #13


    Posts : 42
    Windows 8.1 Pro x64 / Windows 7 x64


    Those are different things. The Private/Public setting is whether shared folders are visible or not. The Gateway is only needed to get outside of the NIC's IP. It's not required.

    As I've said before, I could be disconnected from the Internet and only need to communicate with a handful of IPs on a single subnet. Even if I had an 8-port switch and no router, there is no default gateway in this scenario and I would still have the same problem of not being able to switch back to DHCP mode on that NIC.

    In other setups that I've done for years, I would have my wireless NIC connected to a WiFi network with Internet, where a default gateway and DNS are both defined, and my wired NIC connected to some static IPs with no router on a switch. This setup allows my PC to talk to both networks with no problems, given the two NICs are two different subnets.

    I really appreciate the input, but trust me, I know what I am talking about here. I've got 20 years of Windows networking experience. The intention of my post was to identify a potential Windows 8 bug and see if anyone else is having the same issue. I'll do another screen cast later this weekend to show the behavior as it is supposed to be on Windows 7.
      My System SpecsSystem Spec

  4. #14


    Posts : 42
    Windows 8.1 Pro x64 / Windows 7 x64


    Still haven't figured this out. It doesn't seem to be an issue with drivers as it happens across all NICs. Settings and provider order match my desktop, and it doesn't happen on that.

    I guess clean install is the next step, but I REALLY don't want to do that.

    Thanks!
      My System SpecsSystem Spec

  5. #15


    Posts : 1
    8.1 pro

    Same issue- looking for answers


    I have the SAME problem and wondered if you ever found a solution. I frequently change my ip address b/c I connect to devices at various sites on different subnets. They seem to pile up even when I disable/enable the adapter. Let me know if you found anything about this issue.
    Thanks

    Quote Originally Posted by muzicman82 View Post
    Hi all,

    I posted a screencast of what I go through here: https://dl.dropbox.com/u/3071354/NIC%20IP%20Bug.swf

    It looks like every time I change the IP and go back in, it adds another instance of the TCP/IP v4 stack, and starts listing multiple IPs for the same NIC.

    It does this for both the Wireless and Wired adapters.

    I am gonna post this in the TechNet Group as well and see what I can find out.

    WEIRD.
      My System SpecsSystem Spec

  6. #16


    Begen
    Posts : 26
    Windows 8.1 Pro


    When you setup the IP addresses for the networks you should allways set the following:

    - IP address:
    - Subnet Mask
    - Default Gateway

    DNS isnt required but if you can get a hold of the DNS ips from your router then please set that up as well.
      My System SpecsSystem Spec

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