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Windows 7: Can you "refresh" your LAN?


25 Mar 2010   #11

Windows 7 Enterprise 64-bit
 
 

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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25 Mar 2010   #12

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by TVeblen View Post
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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26 Mar 2010   #13

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

Quote   Quote: Originally Posted by Product FRED View Post
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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26 Mar 2010   #14

XP Pro SP3 X86 / Win7 Pro X86
 
 

Quote   Quote: Originally Posted by Packet View Post
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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26 Mar 2010   #15

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

Quote   Quote: Originally Posted by Packet View Post
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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26 Mar 2010   #16

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

Quote   Quote: Originally Posted by CommonTater View Post
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 System SpecsSystem Spec
26 Mar 2010   #17

Windows 7 Ult, Windows 8.1 Pro,
 
 

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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27 Mar 2010   #18

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

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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27 Mar 2010   #19

Windows 7 Ultimate x64 x2 + x86 + Windows 8.1 x64 x2
 
 

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)
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27 Mar 2010   #20

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

I have XP-SP3 on all with all updates.
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 Can you "refresh" your LAN?




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