Can you "refresh" your LAN?

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  1. Posts : 1,083
    Windows 7 Enterprise 64-bit
       #11

    Here are commands to refresh your LAN connection. Use these in the command prompt (doesn't need to be elevated):

    - ipconfig /release - will release your internet connection

    - ipconfig /renew - will refresh your internet connection by reacquiring an IP address from your router. You don't need to run ipconfig /release before using this command.

    - flushdns - will reacquire DNS information
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  2. Posts : 137
    Windows 7 Ultimate x64
       #12

    TVeblen said:
    I've toyed with the idea of static addresses. Now it's just a matter of deciding if the annoyance is worth the trouble.

    So if I wait 15m the network may refresh by itself?
    Thanks
    my bad - seems to be 12 mins as per Description of the Microsoft Computer Browser Service
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  3. Posts : 6,292
    Windows 7 64 Bit Home Premium SP1
    Thread Starter
       #13

    Product FRED said:
    Here are commands to refresh your LAN connection. Use these in the command prompt (doesn't need to be elevated):

    - ipconfig /release - will release your internet connection

    - ipconfig /renew - will refresh your internet connection by reacquiring an IP address from your router. You don't need to run ipconfig /release before using this command.

    - flushdns - will reacquire DNS information
    Yes that does work, as does resetting the router, but rebooting is then the faster choice, plus you can refill your coffee while you do it!
    I'm just checking to see if I'm missing something obvious and simple.
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  4. Posts : 1,170
    XP Pro SP3 X86 / Win7 Pro X86
       #14

    Packet said:
    this is a dumb question - but doesnt 'register with dns' require a dns server that accepts dynamic client updates?

    else it'll just throw registration failure attempts in the event viewer.

    of course, for a small home network, one can just 'cheat' by having static IP's and stuffing the host ip mapping in the hosts file.

    ps: guessing the network folder uses browser adverts and broadcasts (think 15 mins used to be the old number for cache updates and refreshes)
    Most routers have DNS servers in them, these days.

    My solution to the problem was to simply make my own network shortcuts right in my home folder... One for each computer. The shortcuts have the added advantage that clicking them will actually wake the computer from standby...
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  5. Posts : 6,292
    Windows 7 64 Bit Home Premium SP1
    Thread Starter
       #15

    Packet said:
    my bad - seems to be 12 mins as per Description of the Microsoft Computer Browser Service
    It's been 20 min and XP still has not shown up. But the D-Link Media Server on XP does, and right away.
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  6. Posts : 6,292
    Windows 7 64 Bit Home Premium SP1
    Thread Starter
       #16

    CommonTater said:
    Most routers have DNS servers in them, these days.

    My solution to the problem was to simply make my own network shortcuts right in my home folder... One for each computer. The shortcuts have the added advantage that clicking them will actually wake the computer from standby...
    That sounds like a practical solution. I'll give it a go.
      My Computer


  7. Posts : 8,870
    Windows 7 Ult, Windows 8.1 Pro,
       #17

    This is a typical problem which is easily fixed.

    Solution is really easy just modify one key in registry:
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
    create or modify 32-bit DWORD: LocalAccountTokenFilterPolicy
    set the value to: 1

    The link below shows you how it works and will answer any other questions you might have.

    Networking 7 and XP Issue
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  8. Posts : 6,292
    Windows 7 64 Bit Home Premium SP1
    Thread Starter
       #18

    Hey Chev - Thanks for the reply.

    I've just finished reading some stuff about LocalAccountTokenFilterPolicy and it seems that what this does is disable the UAC Remote Restrictions, allowing unlimited network access to administrative shares.

    Do you think that this fix creates a potential security vulnerability?
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  9. Posts : 31,249
    Windows 11 Pro x64 [Latest Release and Release Preview]
       #19

    One thing to check with the XP machines is that they are running SP3 - there are some additional components included to allow the later OS to poll the XP machines using the new networking methods (link Layer topology)

    It is still available as a separate download for non SP3 systems

    Download details: Link Layer Topology Discovery (LLTD) Responder (KB922120)
      My Computers


  10. Posts : 6,292
    Windows 7 64 Bit Home Premium SP1
    Thread Starter
       #20

    I have XP-SP3 on all with all updates.
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