Here is a good reference on detecting whether a PowerShell script is currently running with Administrator rights, and relaunching with elevated permissions if not.
Courtesy of Bruno Saille’s JEA Helper Tool 2.0: https://gallery.technet.microsoft.com/JEA-Helper-Tool-20-6f9c49dd
########################################################################################
#Make sure we run elevated, or relaunch as admin
########################################################################################
$CurrentScriptDirectory = $PSCommandPath.Substring(0,$PSCommandPath.LastIndexOf(“\”))
Set-Location $CurrentScriptDirectory
#Thanks to http://gallery.technet.microsoft.com/scriptcenter/63fd1c0d-da57-4fb4-9645-ea52fc4f1dfb
$IsAdmin = ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] “Administrator”)
if (-not $IsAdmin)
{
try
{
$ScriptToLaunch = (Get-Location -PSProvider FileSystem).Path + “\JEAHelperTool.ps1”
$arg = “-file `”$($ScriptToLaunch)`””
write-host -ForegroundColor yellow “[“(date -format “HH:mm:ss”)”] WARNING : This script should run with administrative rights – Relaunching the script in elevated mode in 3 seconds…”
start-sleep 3
Start-Process “$psHome\powershell.exe” -Verb Runas -ArgumentList $arg -ErrorAction ‘stop’
}
catch
{
write-host -ForegroundColor red “[“(date -format “HH:mm:ss”)”] Error : Failed to restart script with administrative rights – please make sure this script is launched elevated.”
break
}
exit
}
else
{
write-host -ForegroundColor gray “[“(date -format “HH:mm:ss”)”] We are running in elevated mode, we can proceed with launching the tool.”
}
