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

    Fault : Printing from Office fails, prints blank, or goes to the wrong printer
    Fix   : Pin the default printer and stop Windows moving it
    Source: https://jbtecwiz.com/support/win-office-printing

    Run as     : PowerShell as the affected user
    Expect     : 15 minutes
    Risk       : low
    Reversible : yes

    WHEN THIS IS THE RIGHT FIX
    Jobs go somewhere unexpected, or Office claims there is no printer.

    HOW TO UNDO IT
    Set LegacyDefaultPrinterMode back to 0 to let Windows manage the default
    again.

    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.
#>

[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 SCRIPT WILL NOT RUN UNTIL YOU EDIT IT -
# The commands below contain values only you can supply. Search the
# script for each one, replace it, then delete this block.
$script:MustEdit = @(
    'Your Printer Name'   # a placeholder printer name
)
if ($script:MustEdit.Count) {
    Write-Host ""
    Write-Host '  This script needs editing before it can run.' -ForegroundColor Yellow
    Write-Host '  Replace each of these with a real value:' -ForegroundColor Yellow
    $script:MustEdit | ForEach-Object { Write-Host ("    " + $_) -ForegroundColor Yellow }
    Write-Host ""
    Write-Host '  Then delete the $script:MustEdit block near the top.'
    Write-Host ""
    exit 2
}

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 6"
    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 '  Printing from Office fails, prints blank, or goes to the wrong printer' -ForegroundColor White
Write-Host '  Pin the default printer and stop Windows moving it' -ForegroundColor Cyan
Write-Host ''
Write-Host '  Risk: low   Reversible   15 minutes'
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 'See what Windows currently thinks the default is.' -Command {
    Get-CimInstance Win32_Printer | Where-Object Default -eq $true | Select-Object Name, PortName, WorkOffline
}

Invoke-Step -Number 2 -Do 'Check whether Windows is managing the default itself.' -Why '"Let Windows manage my default printer" sets the default to whatever was last printed to, including at a different site. This is the answer whenever the default keeps changing on its own, and nothing in Office hints at it.' -Command {
    Get-ItemProperty 'HKCU:\Software\Microsoft\Windows NT\CurrentVersion\Windows' -Name LegacyDefaultPrinterMode -ErrorAction SilentlyContinue
}

Invoke-Step -Number 3 -Do 'Turn it off so the default stays where you put it.' -Command {
    Set-ItemProperty 'HKCU:\Software\Microsoft\Windows NT\CurrentVersion\Windows' -Name LegacyDefaultPrinterMode -Type DWord -Value 1
}

Invoke-Step -Number 4 -Do 'Set the correct default explicitly.' -Command {
    (Get-CimInstance Win32_Printer -Filter "Name='Your Printer Name'") | Invoke-CimMethod -MethodName SetDefaultPrinter
}

Invoke-Step -Number 5 -Do 'Check no printer is stuck in the offline state, which makes Office behave as though it does not exist.' -Command {
    Get-Printer | Select-Object Name, PrinterStatus, @{n='Offline';e={(Get-CimInstance Win32_Printer -Filter "Name='$($_.Name)'").WorkOffline}}
}

Invoke-Step -Number 6 -Do 'Restart Office completely. It reads the default at startup and will not notice a change made while it was open.' -Manual

Write-Rule "  Confirm it worked"
Show-Prose 'The default printer is correct, survives a reboot, and Office prints to it.' '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-office-printing' 'Yellow'
} else {
    Write-Host '  Finished.' -ForegroundColor Green
}
Write-Host ''
Show-Prose 'To undo: Set LegacyDefaultPrinterMode back to 0 to let Windows manage the default again.' 'DarkGray'
Write-Rule