Failed to install IPyKernel on windows in PowerShell prompt due to permission error

[DonJayamanne]

CLI in terminal:

PS C:\Development\samples\pySamples\sample1> & C:/Python39/python.exe c:\Users\donja\.vscode-insiders\extensions\ms-python.python-2021.12.1482249642-dev\pythonFiles\shell_exec.py C:/Python39/python.exe -m pip install -U --force-reinstall ipykernel C:/Users/donja/AppData/Local/Temp/tmp-2125271eMrG3H1d7D.log
Executing command in shell >> C:/Python39/python.exe -m pip install -U --force-reinstall ipykernel

Heres' the error (output in terminal)

   from C:\Users\donja\AppData\Local\Temp\pip-uninstall-zomt3253\pywin32.chm    
  Moving to c:\users\donja\appdata\roaming\python\python39\site-packages\pywin32.pth
   from C:\Users\donja\AppData\Local\Temp\pip-uninstall-zomt3253\pywin32.pth    
  Moving to c:\users\donja\appdata\roaming\python\python39\site-packages\pywin32.version.txt
   from C:\Users\donja\AppData\Local\Temp\pip-uninstall-zomt3253\pywin32.version.txt
  Moving to c:\users\donja\appdata\roaming\python\python39\site-packages\pywin32_system32\
   from C:\Users\donja\AppData\Roaming\Python\Python39\site-packages\~ywin32_system32
  Moving to c:\users\donja\appdata\roaming\python\python39\site-packages\win32\ 
   from C:\Users\donja\AppData\Roaming\Python\Python39\site-packages\~in32      
  Moving to c:\users\donja\appdata\roaming\python\python39\site-packages\win32com\
   from C:\Users\donja\AppData\Roaming\Python\Python39\site-packages\~in32com   
  Moving to c:\users\donja\appdata\roaming\python\python39\site-packages\win32comext\adsi\
   from C:\Users\donja\AppData\Roaming\Python\Python39\site-packages\win32comext\~dsi
  Moving to c:\users\donja\appdata\roaming\python\python39\site-packages\win32comext\authorization\
   from C:\Users\donja\AppData\Roaming\Python\Python39\site-packages\win32comext\~uthorization
  Moving to c:\users\donja\appdata\roaming\python\python39\site-packages\win32comext\axcontrol\
   from C:\Users\donja\AppData\Roaming\Python\Python39\site-packages\win32comext\~xcontrol
  Moving to c:\users\donja\appdata\roaming\python\python39\site-packages\win32comext\axdebug\
   from C:\Users\donja\AppData\Roaming\Python\Python39\site-packages\win32comext\~xdebug
   from C:\Users\donja\AppData\Roaming\Python\Python39\site-packages\win32comext\~hell
  Moving to c:\users\donja\appdata\roaming\python\python39\site-packages\win32comext\taskscheduler\
   from C:\Users\donja\AppData\Roaming\Python\Python39\site-packages\win32comext\~askscheduler
ERROR: Could not install packages due to an OSError: [Errno 13] Permission denied: 'C:\\Python39\\Scripts\\pywin32_postinstall.py'
Consider using the `--user` option or check the permissions.

WARNING: Ignoring invalid distribution -raitlets (c:\users\donja\appdata\roaming\python\python39\site-packages)
WARNING: Ignoring invalid distribution -raitlets (c:\users\donja\appdata\roaming\python\python39\site-packages)
WARNING: Ignoring invalid distribution -raitlets (c:\users\donja\appdata\roaming\python\python39\site-packages)
WARNING: You are using pip version 21.2.3; however, version 21.3.1 is available.You should consider upgrading via the 'C:\Python39\python.exe -m pip install --upgrade pip' command.
Traceback (most recent call last):
  File "c:\Users\donja\.vscode-insiders\extensions\ms-python.python-2021.12.1482249642-dev\pythonFiles\shell_exec.py", line 26, in <module>
    subprocess.check_call(shell_args, stdout=sys.stdout, stderr=sys.stderr)
  File "C:\Python39\lib\subprocess.py", line 373, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['C:/Python39/python.exe', '-m', 'pip', 'install', '-U', '--force-reinstall', 'ipykernel']' returned non-zero exit status 1.

[DonJayamanne]

Fixed by #8325