Check this first.
The download of Chrome has been a problem for a long time.
As for the problem with MMEX, it was this update that caused it.
I'm using US's ISP to connect the update server. It was no problem for other Apps but just these two. Maybe you should find out why to cause this.
BTW, I can install Chrome normally using Google's online installer. And Chrome's updater also works fine. So...
It seems to be a problem with the platform for a long time. I think it's time to find out the cause and fix it.