Cannot connect to Samsung Galaxy S4 wifi hotspot from laptop My friend and I are trying to figure out why we can't connect his laptop to his Samsung Galaxy S4's wifi hotspot.

Laptop running Windows 7 Enteprise edition and his Samsung Galaxy S4 running Android Lollipop.

So far, we can connect other devices such as iPad, other phones, but not his laptop. Also the phone has no trouble connecting to WiFi itself, and the laptop has no trouble connecting to any other wifi network. Also, we tested a tethered connection, and that worked fine, but we can't get it to work over wifi. 

We also tried updating the wifi drivers for his computer and that didn't seem to help.

Any ideas/suggestions are greatly appreciated.
In case you still have this problem - or for anyone else who may have it: I had a very similar problem for a long time (Xperia Z1 with Android 5.1, was able to connect to the mobile hotspot from Windows Phone 8.1 and a Windows 7 Professional notebook, but not with Windows 7 Ultimate or a tablet with Windows 10). 

I was able to solve the problem by changing the encryption type from TKIP to AES (Right click on network connection to mobile hotspot>Properties>Security tab. The Security type is set to WPA2-Personal.