HT4628 How-to Fix OS X 10.9 Mavericks – Wi-Fi Issue

Hello,
my MacBook doesn't login to my wlan-network automatically anymore.
It takes minutes until the list of nearby networks and the message "No known network available" appears, despite the fact that my network is listed. When i click on it, I am connected. How can I reset wlan settings, so that I am connected automatically as it should be?
Regards
Arwed

Howdy evenwerk,
It sounds like you are losing internet connection intermitently, and the only way to get connected again is to turn your Wi-Fi off then back on. The next time that it happens, I would use the Wireless Diagnostics to help diagnose the issue. 
About Wireless Diagnostics
I would also recommend taking a look at this article to help set up your router with the recommended Wi-Fi settings for Apple devices:
iOS and OS X: Recommended settings for Wi-Fi routers and access points
Thank you for using Apple Support Communities.
Take care,
Sterling

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