It found to be a problem in last microsoft update. [URL]
Hello,  I have a dell G5 15 , it was working through the past fews days well , i used to share my hotspot to my mobile phone as my wifi is 5GHz , and my phone can find only 2.4 GHz. Today and after the regular updates from microsoft , when i try to share a hotspot from the laptop , the internet stopped working in the laptop , But works to the shared devices !!!! I tried reseting the netwrok , reinstalling all drivers again , doing all updates , but nothing happen  
Dell G5 15 5590 , Hotspot sharing cause the actual connection to stop