System disconnects from building antenna during sleep.

Thanks Bree for that piece of information.

So we are all on same page Funkyecat, what build version are you currently using.

If you upgraded this machine from win 7 or 8.1 I would try an older driver, a driver built for 8.1.

You didn't mention what type of wireless card are you using.

Ken

Then I would keep my recommendation. Find an older driver and I would also disable IPv6. This link makes the IPv6 disable and enable easy.

https://support.microsoft.com/en-gb/...nts-in-windows

I recognize that you got updates on Tuesday. Some were updated to v1703 while others got patches to 1607. I have examples of both in my house. Could you share actual numbers, please.

You said the entire building is wired. Are all access points broadcasting same SSID?

If you run this toll you should be able to visualize the networks your device sees. Are there other open networks broadcasting a strong signal on same channel ?

http://www.techspot.com/downloads/5936-inssider.html

Me, I would try Bree's driver's.

Some of these old adapters can't handle the new on Windows 10. Not sure what it is. My AC7260 will only run on Feb 2014. At least a dozen newer drivers since then, all a no go.

Would still be interested in understanding SSID structure.

Caledon Ken said:

Me, I would try Bree's driver's.

Some of these old adapters can't handle the new on Windows 10. Not sure what it is. My AC7260 will only run on Feb 2014. At least a dozen newer drivers since then, all a no go.

Would still be interested in understanding SSID structure.

Thats the Intel AC 7260? Thats interesting. I have the same wireless card in my Precision and I am running the Jan 2016 driver without an issue. I suppose it must also have to do with the system is in and the other hardware. It seems like people who have this card experience either extreme. It hardly works at all or with just a very specific driver, or it works flawlessly as is in my case.