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

    Fault : Office says "Product Deactivated" or "Unlicensed Product"
    Fix   : Clear the licence token and re-activate
    Source: https://jbtecwiz.com/support/win-app-office-activation

    Run as     : Elevated PowerShell
    Expect     : 25 minutes
    Risk       : medium
    Reversible : yes

    WHEN THIS IS THE RIGHT FIX
    The licence is definitely assigned but the client will not accept it.

    HOW TO UNDO IT
    Tokens are re-issued on the next successful sign-in; nothing is
    permanently removed.

    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 '  Office says "Product Deactivated" or "Unlicensed Product"' -ForegroundColor White
Write-Host '  Clear the licence token and re-activate' -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 'Close all Office applications.' -Manual

Invoke-Step -Number 2 -Do 'List the installed licences so you know what you are removing.' -Command {
    cmd.exe /c 'cd ''C:\Program Files\Microsoft Office\Office16'' & cscript ospp.vbs /dstatus'
}

Invoke-Step -Number 3 -Do 'Clear the cached licence tokens.' -Why 'This is where the subscription licence lives on a per-user basis. A token issued to an identity that has since changed will keep failing quietly, and no amount of signing in replaces it while it is still on disk.' -Command {
    Remove-Item "$env:LOCALAPPDATA\Microsoft\Office\Licenses" -Recurse -Force -ErrorAction SilentlyContinue
    Remove-Item "$env:LOCALAPPDATA\Microsoft\Office\16.0\Licensing" -Recurse -Force -ErrorAction SilentlyContinue
}

Invoke-Step -Number 4 -Do 'Clear the shared computer licensing token if this is a session host.' -Command {
    Get-ChildItem "$env:LOCALAPPDATA\Microsoft\Office\16.0\Licensing" -ErrorAction SilentlyContinue | Remove-Item -Recurse -Force
}

Invoke-Step -Number 5 -Do 'Remove the Office credentials as well, then start Word and sign in.' -Command {
    cmdkey /list | ForEach-Object { if ($_ -match 'Target:\s*(MicrosoftOffice\S+)') { cmdkey /delete:$($Matches[1]) } }
}

Write-Rule "  Confirm it worked"
Show-Prose 'The banner is gone and the account shows under File -> Account as a subscription product.' 'White'
Write-Host ''
if (-not $DryRun) {
    cmd.exe /c 'cscript ''C:\Program Files\Microsoft Office\Office16\ospp.vbs'' /dstatus'
}

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-app-office-activation' 'Yellow'
} else {
    Write-Host '  Finished.' -ForegroundColor Green
}
Write-Host ''
Show-Prose 'To undo: Tokens are re-issued on the next successful sign-in; nothing is permanently removed.' 'DarkGray'
Write-Rule