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WiFi is screwy after Definition Update for Windows Defender - KB915597 (Definition 1.143.1033.0)

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#1 Vockx


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Posted 31 January 2013 - 04:21 PM

Some days ago an automatic update was installed. It shows up in the update history as Definition Update for Windows Defender - KB915597 (Definition 1.143.1033.0).

I am not 100% sure if this is responsible but almost right after the update I have trouble connecting to routers. There is one router I have the wpa2 key for but when I fill this out it won't connect. Using the button on the router to connect also doesn't work. The router shows activity whenever the pc is trying to connect. There is also a WiFi from the neighbors that is open. I can connect to that one some of the time, but most of the time there is no internet connection. Also sometimes when connecting it asks me for a key, although the connection is open. Other computers can connect without problems.

Connecting the pc to the router with a lan cable works though.

I tried fiddling with ipconfig, and using static ip's. Deactivated the adapers and switched them on again. Deleted wireless networks and updated drivers.

No avail...

The OS is Windows 7 64bit. The pc is a Dell XPS.

Any thoughts?

Thanks for your help.

Edited by Vockx, 31 January 2013 - 04:23 PM.

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#2 sudsy


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Posted 08 February 2013 - 12:25 AM

I am having the same kind of problem. This has happened before and goes away just as mysteriously as it appears. I am also having the problem on a 64bit Win7 MSI notebook.

UFO pilot

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