I can't figure this one out. I've upgraded my Windows 8.1 machine at to Windows 10 about 4 days ago. I have a few Virtual Box machines running on the host running Windows 7 and other OS'. I mainly use the Windows 7 Virtual Machine for my internet usage. Prior to the upgrade, I had no issue whatsoever with accessing Udemy.com. After the upgrade, I went to Udemy to study using Firefox and got a "Secure Connection Failed" message. I then tried via Chrome and received a "No Data Received" message. I tried IE and after the Login page on Udemy, it wouldn't move to the next page, essentially just in a "thinking" state.
I tried on my host machine and received the same messages. I tried on my Mac laptop (wireless), using Firefox, and it was fine. I tried on my Iphone, using Safari, fine (all on my home network). The next day at work, I tried on my PC running Windows 8.1 and using Firefox, no problem. I upgraded to Windows 10 on my work PC and no issue at all accessing Udemy.
After reaching out to Udemy, their Support engineers, said it was an issue on my side and didn't have an answer other than:
netsh int ip set dns
netsh winsock reset
Now Restart your PC.
This didn't fix it either.
Thanks in advance!