My wifi drops when I plug in an external monitor through the thunderbolt port

I changed my channel on my router this evening and will report back if I have any issues.

I am willing to try anything at this point.

Channel 1 is the answer to my problems it seems.

10 days in and I haven't had an issue since, lid open or closed.

Thanks everyone!

!

Just found out about that problem. The only solution now is Channel 1. Apple Support guy said that it should be fixed with Yosemite. Thanks for your help guys.

I am having the same issue with Yosemite, but so far changing the control channel on my 5G router to 149 as suggested in an earlier post is working.

Thank you for posting this… it worked for me!! 🙂

Only thing that worked for me was using VGA instead of DVI,

strange thing is i had no problems for a month after i first plugged in my external DVI monitor.

MBP late 2011

OS 10.9.5

I had this problem, but managed to fix it by switching to an HDMI cable between laptop and monitor!

Thank you so much. After 3 hours I found that connecting to external monitor was causing the issue, when using the displayport. Finally connected to the internet now.

This worked for me!! Thank you so much. I was going insane.

omg the foil works! Thank you so much.

This is such a bizarre problem, but this absolutely fixed it for me. Plugging in the cord immediately killed my wireless until I changed the wireless channel to 7.

Changed my xfinity router channel to 1 and it worked for me