I have a mBot v1.0 and I use Windows 10.
I can connect mBot through the USB port with mBlock 3 and mBlock 5 online (ide.makeblock.com) but can not see any ports with mBlock 5 for PC (V5.0.1.exe).
I did a control on 6 PCs and I had this problem on 4, only on 2 PCs worked with both versions.
Another problem:
in mBlock 5 with mBot, it is not possible to show data because the block “Show (hello)” is missing.