Hi Jhon,
Please refer the below similar issue answers,
https://community.mendix.com/link/space/studio-pro/questions/121958
I hope it helps!
Thanks & Regards,
Manikandan K
When i first downloaded on my work laptop it took a good 5 or 6 times for the first download of Studio pro. Then it worked. It was like it was getting slightly further each time before it timed out. Might be worth trying a few more times.