<#
Author: Gabe Kerntke
Date: 03-11-2024

.Synopsis

.Modified
2024-03-11 (GabeK) - Original script created

#>

#Region Variables

$users = (Get-ChildItem -path c:\users).name
$CurrentUser = ((get-ciminstance win32_computersystem | % username) -split '\\')[1]

#Region Functions
Function RegAdd {
    New-PSDrive -PSProvider Registry -Name HKU -Root HKEY_USERS -ErrorAction SilentlyContinue

    foreach ($user in $users) {
        If ($user -eq $currentuser) { continue; }
        reg load "hku\$user" "C:\Users\$user\NTUSER.DAT"
        # Do whatever you need with "hkey_users\$user" here which links to each users' HKU
        If (Test-Path "HKU:$user\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\MSTeams_8wekyb3d8bbwe\TeamsTfwStartupTask") {
        Set-ItemProperty "HKU:$user\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\MSTeams_8wekyb3d8bbwe\TeamsTfwStartupTask" -Name "State" -Value 1 -Force | Out-Null
        Start-Sleep 5
        }
    }

    foreach ($user in $users) {
        If ($user -eq $currentuser) { continue; }
        Start-Sleep 5
        reg unload "hku\$user"
    }
    RegAdd2
}

Function RegAdd2 {
$Keys = Get-ChildItem "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\" -Recurse
Foreach ($Key in $Keys) {
    If (($key.GetValueNames() | % { $key.GetValue($_) }) -match "\b$CurrentUser\b" ) { $sid = $key }
}

$sid = $sid.pschildname

Set-ItemProperty "HKU:\$sid\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\MSTeams_8wekyb3d8bbwe\TeamsTfwStartupTask" -Name "State" -Value 1 -Force | Out-Null
}

#Region Script Start
RegAdd
#Region Script End