Unsupported Mod Crash? Fix Nexus Paks Conflicts.

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# Hogwarts Legacy legacy-mod isolation (Windows PowerShell 5.1+)
# Runs locally on YOUR PC. Backs up files rather than deleting them.
# Close Hogwarts Legacy and Vortex/other mod tools before starting.
$ErrorActionPreference = 'Stop'
$gameRoot = (Read-Host 'Paste the Hogwarts Legacy install folder').Trim('"')
if (-not (Test-Path -LiteralPath $gameRoot -PathType Container)) { throw 'Game folder not found. No files changed.' }
$paks = Join-Path $gameRoot 'Phoenix\Content\Paks'
$mods = Join-Path $paks '~mods'
$bin = Join-Path $gameRoot 'Phoenix\Binaries\Win64'
if (-not (Test-Path -LiteralPath $paks -PathType Container)) { throw 'Phoenix\Content\Paks not found. Check your install path.' }
$backup = Join-Path ([Environment]::GetFolderPath('MyDocuments')) ('HL-Legacy-Mod-Backup-' + (Get-Date -Format 'yyyyMMdd-HHmmss'))
$files = @()
if (Test-Path -LiteralPath $mods -PathType Container) {
  $files += @(Get-ChildItem -LiteralPath $mods -File -Recurse | Where-Object { $_.Extension.ToLowerInvariant() -in @('.pak','.ucas','.utoc') })
}
foreach ($name in @('dwmapi.dll','UE4SS.dll')) {
  $candidate = Join-Path $bin $name
  if (Test-Path -LiteralPath $candidate -PathType Leaf) { $files += @(Get-Item -LiteralPath $candidate) }
}
if ($files.Count -eq 0) { Write-Host 'No matching loose archives or UE4SS hook DLLs detected. Nothing to move.'; return }
Write-Host ('Files to isolate: ' + $files.Count)
$files | ForEach-Object { Write-Host (' - ' + $_.FullName) }
$ok = Read-Host 'Type BACKUP to create a backup and move these files'
if ($ok -cne 'BACKUP') { Write-Host 'Cancelled. No files changed.'; return }
New-Item -ItemType Directory -Path $backup -Force | Out-Null
foreach ($f in $files) {
  if ($f.FullName.StartsWith($mods + '\',[StringComparison]::OrdinalIgnoreCase)) {
    $relative = $f.FullName.Substring(($mods + '\').Length)
    $destination = Join-Path (Join-Path $backup 'LooseArchives') $relative
  } else {
    $destination = Join-Path (Join-Path $backup 'UE4SS-Hooks') $f.Name
  }
  $parent = Split-Path -Parent $destination
  New-Item -ItemType Directory -Path $parent -Force | Out-Null
  if (Test-Path -LiteralPath $destination) { throw ('Backup collision, stopped: ' + $destination) }
  Move-Item -LiteralPath $f.FullName -Destination $destination -ErrorAction Stop
  Write-Host ('Backed up: ' + $f.Name)
}
Write-Host ('Done. Backup: ' + $backup)
Write-Host 'Saves untouched. Launch the game. Restore only compatible mods later.'

How to run: Open Windows PowerShell, paste the script, then enter your game installation folder. Review the detected file list; type BACKUP only if the paths look correct. No administrator mode is normally necessary. It never deletes SaveGames.