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Windows 7: Missing SSID - check channels


22 Mar 2012   #1

 
Missing SSID - check channels

After a reboot of my router, one of my Windows 7 x64 machines couldn't detect the network - but it saw neighbours' SSIDs just fine.

Turns out apparently the router (a D-Link DIR-615) picks a random (?) channel to broadcast to when you switch it on. Nothing else explains why it doesn't simply stick to the same channel.

The reason this particular machine couldn't see the SSID? Apparently the Aztech wireless USB adaptor it was using defaults to looking at a certain group of channels (1-11). The router was broadcasting on channel 13, which I found out after hooking up the machine with a CAT5 cable then looking at the router settings through the web interface. Changed the USB wireless to look at channel 13, presto, the SSID appeared and could connect, business as usual.

TL;DR:
If after a router restart you can't see the SSID anymore, check your wireless settings to see what channels it's scanning.

Edit:
Posted because couldn't find any relevant threads after a search, but if there are then feel free to merge this post in.

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 Missing SSID - check channels




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