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

    Fault : Windows Hello: "Something went wrong" and the PIN is refused
    Fix   : Rebuild the Hello container
    Source: https://jbtecwiz.com/support/win-sec-hello-pin

    Run as     : Elevated PowerShell, signed in with a password
    Expect     : 25 minutes
    Risk       : medium
    Reversible : yes

    WHEN THIS IS THE RIGHT FIX
    You can sign in another way and want the PIN working again.

    HOW TO UNDO IT
    None -- the container is rebuilt from scratch. Password sign-in remains
    available throughout.

    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

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 '  Windows Hello: "Something went wrong" and the PIN is refused' -ForegroundColor White
Write-Host '  Rebuild the Hello container' -ForegroundColor Cyan
Write-Host ''
Write-Host '  Risk: medium   Reversible   25 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 'Try the supported route first: Settings -> Accounts -> Sign-in options -> PIN -> I forgot my PIN. This re-provisions cleanly and is enough most of the time.' -Manual

Invoke-Step -Number 2 -Do 'If that fails, take ownership of the NGC folder and clear it. Note the folder is protected, so this needs the permission change first.' -Command {
    cmd.exe /c 'takeown /f C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\Ngc /r /d y & icacls C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\Ngc /grant administrators:F /t'
}

Invoke-Step -Number 3 -Do 'Remove the container contents.' -Why 'This deletes every Hello credential on the machine, for every user -- not just the broken one. Everyone will have to set their PIN up again, so it is worth telling them before rather than after.' -Command {
    Remove-Item 'C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\Ngc\*' -Recurse -Force
}

Invoke-Step -Number 4 -Do 'Restore the default permissions on the folder afterwards.' -Command {
    cmd.exe /c 'icacls C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft\Ngc /reset /t'
}

Invoke-Step -Number 5 -Do 'Restart and set up the PIN again from Settings.' -Manual

Write-Rule "  Confirm it worked"
Show-Prose 'The PIN is accepted and survives a restart.' 'White'
Write-Host ''
if (-not $DryRun) {
    Get-Tpm | Format-List TpmReady,TpmPresent
}

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-sec-hello-pin' 'Yellow'
} else {
    Write-Host '  Finished.' -ForegroundColor Green
}
Write-Host ''
Show-Prose 'To undo: None -- the container is rebuilt from scratch. Password sign-in remains available throughout.' 'DarkGray'
Write-Rule