Can't install MT5 instance twice?

 

i downloaded an MT5 setup file and run it, first installation is OK, but if i install it again, a message box pop up to let me fill proxy server, and it's freeze after i cancel that box. how to solve? Thx~

Files:
mt5.jpg  89 kb
 
I got no problem installing 2 instances of mt5.
I do not encounter the problem on the screen shot
 

i find out some info about it but useless in my case: https://www.metatrader5.com/en/terminal/help/startworking/settings

 
i download the setup file again and it works