User based detection

function getloggedindetails() {

    ##Find logged in username

    $user = Get-WmiObject Win32_Process -Filter "Name='explorer.exe'" |

      ForEach-Object { $_.GetOwner() } |

      Select-Object -Unique -Expand User

   

        $path= "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\*"

        $sid = (Get-ItemProperty -Path $path | Where-Object { $_.ProfileImagePath -like "*$user" }).PSChildName

    $return = $sid, $user

   

    return $return

    }

    $loggedinuser = getloggedindetails

    $username = $loggedinuser[1]

   $File = "C:\users\$username\AppData\Local\Microsoft\Teams.jpg"

   if (Test-Path $File) {

    write-output "Teams Update detected, exiting"

    exit 0

    }

   else {

    exit 1

    }

    #####Registry

        $loggedinuser = getloggedindetails

        ##Set key

        $sid = $loggedinuser[0]

        $Path = "Registry::HKU\$sid\SOFTWARE\7-Zip"

        $Name = "Path"

        $Type = "STRING"

        $Value = "C:\Program Files\7-Zip\"

        Try {

            $Registry = Get-ItemProperty -Path $Path -Name $Name -ErrorAction Stop | Select-Object -ExpandProperty $Name

            If ($Registry -eq $Value){

                Write-Output "Detected"

               Exit 0

            }

            Exit 1

        }

        Catch {

            Exit 1

                write-host "not detected"

            write-host $path

        }

User registry through PS

 New-PSDrive HKU Registry HKEY_USERS | Out-Null

$user = Get-WmiObject -Class Win32_ComputerSystem | Select-Object -ExpandProperty Username

$sid = (New-Object System.Security.Principal.NTAccount($user)).Translate([System.Security.Principal.SecurityIdentifier]).Value

$key = "HKU:\$sid\Software\Test"

$reg = Get-Item -Path $key -ErrorAction SilentlyContinue

if (-not $reg) {

    Write-Host "Registry key didn't exist, creating it now"

    New-Item -Path "HKU:\$sid\Software" -Name "Test" -Force | Out-Null

}

if (-not $reg) {

    Write-Host "Registry key didn't exist, creating it now"

    New-ItemProperty -Path "HKU:\$sid\Software\Test" -Name "Testing" -Value "working" -PropertyType String | Out-Null

} else {

    Write-Host "Registry key changed to 1"

    Set-ItemProperty -Path "HKU:\$sid\Software\Test" -Name "Testing" -Value "working" | Out-Null

}