New PC with Win 11. Ryzen 5 CPU. Fresh install of MT5, I try to open the data window from terminal and a Command window flashes open (1 sec- no messages), closes and that's the end of it

[DrLipsitz]

I've uninstalled and reinstalled multiple times. Tried several tricks I found on Reddit and google. Without success.

I even tried going directly into profiles and template files and copying the templates and profiles from established machines,

They did not appear after reboot.

[Ryan L Johnson]

DrLipsitz:
I've uninstalled and reinstalled multiple times. Tried several tricks I found on Reddit and google. Without success.

I even tried going directly into profiles and template files and copying the templates and profiles from established machines,

They did not appear after reboot.

You might want to try installing MT5 in Portable Mode. In this way, all MT5 files are in one directory.