#Requires -Version 5.1
<#
    JbTecWiz Support Centre -- generated fix script

    Fault : "The User Profile Service failed the sign-in"
    Fix   : Repair the ProfileList entry
    Source: https://jbtecwiz.com/support/win-profile-service

    Run as     : Elevated PowerShell, signed in as a different administrator
    Expect     : 15 minutes
    Risk       : medium
    Reversible : yes

    WHEN THIS IS THE RIGHT FIX
    The user's folder still exists under C:\Users. Sign in as another
    administrator -- you cannot repair a profile you are currently using.

    HOW TO UNDO IT
    Import the .reg file exported in step 2 and restart.

    This script walks the fix one step at a time and asks before each
    one. Steps with no command are things you do yourself -- it prints
    those and waits. Run with -DryRun to print without executing.

    --------------------------------------------------------------------
    NO WARRANTY - USE AT YOUR OWN RISK

    This script is provided by JbTecWiz as-is and with no warranty of any
    kind, express or implied. You run it entirely at your own risk.

    JbTecWiz accepts no liability for any loss or damage arising from its
    use, including but not limited to data loss, downtime, or configuration
    changes that turn out to be wrong for your system.

    You are responsible for reading this script before running it, for
    satisfying yourself that it suits the machine in front of you, and for
    having a working backup first. Some steps cannot be undone.
    --------------------------------------------------------------------
#>

[CmdletBinding()]
param(
    # Print every step and command without running anything.
    [switch]$DryRun,
    # Do not ask before each step. Read the script first if you use this.
    [switch]$Unattended
)

$ErrorActionPreference = 'Stop'
$script:Failed = 0

# This fix is documented as needing an elevated session.
$id = [Security.Principal.WindowsIdentity]::GetCurrent()
if (-not (New-Object Security.Principal.WindowsPrincipal $id).IsInRole(
        [Security.Principal.WindowsBuiltInRole]::Administrator)) {
    Write-Host ''
    Write-Host '  This fix needs an elevated PowerShell.' -ForegroundColor Yellow
    Write-Host '  Close this window, right-click PowerShell, Run as administrator,'
    Write-Host '  and run the script again.'
    Write-Host ''
    exit 3
}

function Write-Rule { param([string]$Text)
    Write-Host ''
    Write-Host ('-' * 70) -ForegroundColor DarkGray
    if ($Text) { Write-Host $Text -ForegroundColor Cyan }
}

function Show-Prose { param([string]$Text, [string]$Colour = "Gray")
    if (-not $Text) { return }
    $words = $Text -split "\s+"; $line = "  "
    foreach ($w in $words) {
        if (($line.Length + $w.Length) -gt 74) { Write-Host $line -ForegroundColor $Colour; $line = "  " }
        $line += "$w "
    }
    if ($line.Trim()) { Write-Host $line -ForegroundColor $Colour }
}

function Invoke-Step {
    param(
        [int]$Number, [string]$Do, [string]$Why,
        [scriptblock]$Command, [switch]$Manual, [string]$Shell = "powershell"
    )
    Write-Rule "  Step $Number of 5"
    Show-Prose $Do "White"
    if ($Why) { Write-Host ""; Show-Prose $Why "DarkGray" }

    if ($Manual) {
        Write-Host ''
        Write-Host '  -> Do this yourself, then press Enter to carry on.' -ForegroundColor Yellow
        if (-not $Unattended -and -not $DryRun) { [void](Read-Host) }
        return
    }

    Write-Host ''
    foreach ($l in ($Command.ToString().Trim() -split "`n")) {
        Write-Host ("    " + $l.Trim()) -ForegroundColor Green
    }
    Write-Host ''

    if ($DryRun) { Write-Host "  (dry run -- not executed)" -ForegroundColor DarkGray; return }
    if (-not $Unattended) {
        $a = Read-Host "  Run this step? [Y]es / [S]kip / [Q]uit"
        if ($a -match "^[Qq]") { Write-Host "  Stopped at your request."; exit 0 }
        if ($a -match "^[Ss]") { Write-Host "  Skipped." -ForegroundColor DarkGray; return }
    }
    try { & $Command }
    catch {
        $script:Failed++
        Write-Host ("  Step $Number failed: " + $_.Exception.Message) -ForegroundColor Red
        Show-Prose "The rest of the fix may depend on this. Read the write-up before carrying on." "Red"
        if (-not $Unattended) {
            $c = Read-Host "  Carry on anyway? [y/N]"
            if ($c -notmatch "^[Yy]") { exit 1 }
        }
    }
}

Write-Rule
Write-Host '  "The User Profile Service failed the sign-in"' -ForegroundColor White
Write-Host '  Repair the ProfileList entry' -ForegroundColor Cyan
Write-Host ''
Write-Host '  Risk: medium   Reversible   15 minutes'
Write-Host ''
Show-Prose 'No warranty. Use at your own risk - JbTecWiz accepts no liability. Read it before you run it, and have a backup.' 'DarkYellow'
Write-Rule

if (-not $Unattended -and -not $DryRun) {
    $go = Read-Host '  Ready? [y/N]'
    if ($go -notmatch "^[Yy]") { Write-Host "  Nothing was changed."; exit 0 }
}

Invoke-Step -Number 1 -Do 'List the profile entries and find the one for the affected user. Note whether its key name ends in .bak.' -Command {
    Get-ChildItem 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList' | ForEach-Object { [PSCustomObject]@{ Key = $_.PSChildName; Path = (Get-ItemProperty $_.PSPath).ProfileImagePath } }
}

Invoke-Step -Number 2 -Do 'Export the whole key as a backup before touching it.' -Command {
    cmd.exe /c 'reg export "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList" C:\temp\profilelist-backup.reg'
}

Invoke-Step -Number 3 -Do 'If there is a matching pair -- S-1-5-21-... and S-1-5-21-....bak -- delete the one WITHOUT .bak, then rename the .bak key to remove the suffix.' -Why 'Windows creates the .bak when it fails to load the real profile. The .bak is the good one; the plain key is the temporary profile it made instead.' -Manual

Invoke-Step -Number 4 -Do 'In the surviving key, set RefCount and State to 0.' -Command {
    $sid = 'S-1-5-21-REPLACE-ME'
    $k = "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\$sid"
    Set-ItemProperty $k -Name RefCount -Value 0 -Type DWord
    Set-ItemProperty $k -Name State -Value 0 -Type DWord
}

Invoke-Step -Number 5 -Do 'Confirm ProfileImagePath points at the real folder, then restart and sign in as the user.' -Command {
    Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\$sid" | Select-Object ProfileImagePath, RefCount, State
}

Write-Rule "  Confirm it worked"
Show-Prose 'The user signs in to their own desktop with their files present, and no temporary profile warning appears.' 'White'

Write-Rule
if ($script:Failed -gt 0) {
    Write-Host ("  Finished with " + $script:Failed + " failed step(s).") -ForegroundColor Yellow
    Show-Prose 'Read the full write-up at https://jbtecwiz.com/support/win-profile-service' 'Yellow'
} else {
    Write-Host '  Finished.' -ForegroundColor Green
}
Write-Host ''
Show-Prose 'To undo: Import the .reg file exported in step 2 and restart.' 'DarkGray'
Write-Rule