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

    Fault : 0x80070035 -- "the network path was not found" reaching a share
    Fix   : Check the dialect before considering SMB1
    Source: https://jbtecwiz.com/support/win-net-smb-access

    Run as     : Elevated PowerShell
    Expect     : 20 minutes
    Risk       : high
    Reversible : yes

    WHEN THIS IS THE RIGHT FIX
    Genuinely old equipment. SMB1 is the last resort and should be treated
    as temporary.

    HOW TO UNDO IT
    Disable-WindowsOptionalFeature -Online -FeatureName SMB1Protocol-Client,
    then 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

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 4"
    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 '  0x80070035 -- "the network path was not found" reaching a share' -ForegroundColor White
Write-Host '  Check the dialect before considering SMB1' -ForegroundColor Cyan
Write-Host ''
Write-Host '  Risk: high   Reversible   20 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 'Check whether SMB1 is even installed -- on current Windows it is not.' -Command {
    Get-WindowsOptionalFeature -Online -FeatureName SMB1Protocol | Format-List FeatureName,State
}

Invoke-Step -Number 2 -Do 'Before installing it, check the device really cannot do SMB2. Most NAS firmware from the last decade can, and simply has it turned off in its own settings.' -Manual

Invoke-Step -Number 3 -Do 'If there is no alternative, install the client only and never the server component.' -Why 'SMB1 is the protocol WannaCry and NotPetya spread over. The client-only component lets this machine reach the old device without turning this machine into a target.' -Command {
    Enable-WindowsOptionalFeature -Online -FeatureName SMB1Protocol-Client -NoRestart
}

Invoke-Step -Number 4 -Do 'Record why it was enabled and set a date to remove it.' -Manual

Write-Rule "  Confirm it worked"
Show-Prose 'The share opens. Get-SmbConnection will show a dialect of 1.5 or lower, which is the reminder that this is temporary.' '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-net-smb-access' 'Yellow'
} else {
    Write-Host '  Finished.' -ForegroundColor Green
}
Write-Host ''
Show-Prose 'To undo: Disable-WindowsOptionalFeature -Online -FeatureName SMB1Protocol-Client, then restart.' 'DarkGray'
Write-Rule