In PsISE, the cmdlets are gone. they used to be there. I was on another task and came back the script and console panels work as before but the command window is empty. I clicked to "?" help and crashed the ISE. Has anyone else seen this behavior? Truly a mystery and I'm unable to figure out what caused this and what to reinstall if that is the solution. Re-loading Windows FrameWork at 4.6 or 4.7, may just be a Band-Aid if this recurs. Any ideas, Windows 10 64 bit development environment.
Try running this command to reset ISE to the default settings:
$psISE.Options.RestoreDefaults() Close the ISE and reopen it to see if it's working. Another option would be to install VScode with the powershell add-on and just use that which is what many people are doing since they are not working on ISE any longer.