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Just a quick question that I can't see mentioned anywhere online. I have a Windows 7 box configured like these guys recommend http://www.itgeekdiary.com/windows-7-as-an-wi-fi-access-point/ simply so that I can have my Windows 7 box as a wifi access point or a wifi emitter. It's also called a Microsoft Virtual WiFi Miniport Adapter.

But it powers off and shuts down automatically and stops working. Basically everything works as intended and then - well -it will stopped working when I am not at the Windows 7 PC for a long time.

The problem seems to be that every time my PC goes to "power save / sleep" and in the morning the Windows 7 machine "wakes" but blooming heck the wifi has stopped and you have to power cycle the PC (which is very uncool).

When I power Cycle I have to do the following as administrator

C:\Windows\System32\netsh.exe wlan start hostednetwork

I then tried a gazllion things involving services and power management and eventually discovered that if I run the following commands as administrator it will be ok (for a bit) but every 3rd ot 4th time I try this "trick" it simply fails.

the trick that seems to work 3 out of 4 times (i.e. "most" of the time)

C:\Windows\System32\netsh.exe wlan stop hostednetwork
C:\Windows\System32\netsh.exe wlan start hostednetwork

But why does this only work "some" of the time?

What else I did by myself:

on every manage adapter properties (that relates to the wifi) I right clicked [configure] [power management] /disabled/ "allow the computer to power off to save power" <- this made no difference

Also (and this is a bit annoying) there is no system tray app/GUI for the Microsoft Virtual WiFi Miniport Adapter output signal ... none... so (lame as it sounds) the ONLY way I can check if it's on is to physically go to another device and SCAN.. lame

so my question can probably be solved by any of the following:

  • a) can I stop Windows 7 sleeping this wifi when the machine sleeps
  • b) can I force Windows to force wake this process on wake? if so how?
  • c) what is the service / process REALLY called and how do I restart it if it crashes
  • d) how can I flush the wifi properly rather power cycle the host machine
  • e) anyone have a link to an program or app that can sit in the system tray that shows windows 7 wifi hotspot emission status (on/off/etc etc)

Since I am a programmer I can easily write a vbs script / windows exe to fix this (and I will share this solution) and the gui problem if I can work out the actual service that is running that netsh stops/starts

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migrated from stackoverflow.com Sep 9 '12 at 21:14

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1 Answer 1

I created a scheduled task with highest privileges to run netsh wlan start hostednetwork at logon and when the computer wakes up.

To avoid the hostednetwork to shutdown, I repeat the task every x minutes. However, you can see the Command Prompt window popping up and closing every time, which is really annoying. But it works.

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thanks, I can shell the dos prompt within VBS script (so it's not seen) - so let me build a VBS script that does this and that can be added as the scheduled task (as I type there is a down server I need to fix but when I remember I wrote what I just said (please let me remember!) I will do it :D - it's a small job) –  conners Oct 23 '12 at 15:08

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