Hi,
I also have had a similair problem. Re install did not solve it.
When compiling the simple Arduino blink example I got
" The terminal process failed to launch: Path to shell executable “c:\Users\name\Documents\PlatformIO\Projects\test6\pio.exe” does not exist. "
Very easy to solve however. In directory “C:\Users\name.platformio\penv\Scripts” I copied
“platformio.exe” to a new file “pio.exe”.
Realy very odd. On two other win10 computers platformio worked fine after installation without problems…
win 10 home (2020-04-23)
ver 1909
OS version 18363.1256
vs Code 1.52.1
PlatformIO core 5.0.4 home 3.3.1
B R / Goran