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How can I tell in my scripts if PowerShell is running with administrator privileges?

I need to know because I'm trying to run a program that requires the ability to open protected ports.

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[bool](([System.Security.Principal.WindowsIdentity]::GetCurrent()).groups -match "S-1-5-32-544")

Breaking apart what this does:

  • [bool] - Cast the end result to a bool.
  • [System.Security.Principal.WindowsIdentity]::GetCurrent() - Retrieves the WindowsIdentity for the currently running user.
  • (...).groups - Access the groups property of the identity to find out what user groups the identity is a member of.
  • -match "S-1-5-32-544" checks to see if groups contains the Well Known SID of the Administrators group, the identity will only contain it if "run as administrator" was used.
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    Instead of just posting a line of code, can you please explain what it does? This helps future visitors in understanding and adapting it, if necessary.
    – slhck
    May 3 '14 at 15:53
  • BOOO. Give this man more upvotes Oct 24 '17 at 18:58
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    I prefer the answer by @Bill_Stewart below since it is free of magic strings.
    – 8DH
    Apr 20 '18 at 6:49
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    Instead of using -match and typecasting: [Security.Principal.WindowsIdentity]::GetCurrent().Groups -contains 'S-1-5-32-544' Oct 20 '19 at 4:23
  • @MaximilianBurszley Nice one! Definitely an improvement over all those other multi-line solutions!
    – not2qubit
    Oct 14 '20 at 22:55
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([Security.Principal.WindowsPrincipal] `
  [Security.Principal.WindowsIdentity]::GetCurrent() `
).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)

This retrieves the current Windows identity and returns $true if the current identity has the Administrator role (i.e., is running elevated).

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    While the accepted answer is correct, this answer is much more clear, especially to someone who may read your script six months from now. May 20 '14 at 19:52
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In Powershell 4.0 you can use requires at the top of your script:

#Requires -RunAsAdministrator

Outputs:

The script 'MyScript.ps1' cannot be run because it contains a "#requires" statement for running as Administrator. The current Windows PowerShell session is not running as Administrator. Start Windows PowerShell by using the Run as Administrator option, and then try running the script again.

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    what if you want a function that exits if not ran by admin? Oct 24 '17 at 18:58
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    @KolobCanyon - There's no such thing as running only a PowerShell function elevated; the entire PowerShell process is either elevated or not. Nov 5 '17 at 23:27
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    @Bill_Stewart yes, but you can return if the user is not admin :) Nov 6 '17 at 21:39
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    @KolobCanyon - you can only elevate the PowerShell process; you cannot elevate a single function. That's why the #Requires -RunAsAdministrator is useful: It prevents the entire script from running if you're not elevated. Nov 6 '17 at 21:45
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    The requires link isn't working for me. Perhaps about_Requires is the new URL?
    – Kevinoid
    Jul 15 '20 at 17:57
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one more way:

${env:=::} -eq $null

the environment variable =:: is presented only you are NOT running the program as administrator.

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Your code :


invoke-command -computername cavl-ghwwsc3 -command { ([Security.Principal.WindowsPrincipal] 
  [Security.Principal.WindowsIdentity]::GetCurrent()
).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)}

is working fine but how to launch it remotely in current user session (not in powershell elevate admin rights because it return my admin isadmin value to remote computer, not current log user if this user isadmin.

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