Silently Uninstall Quickbooks

Save the script locally and call the script with this: .\Untitled1.ps1 -LicenseKey 1234-1234-1234-123 -ProductKey 123-123 or remove the param block and hard code your keys!

Please email clientsupport@flowdevs.io with any questions.

<#
.SYNOPSIS
    Uninstall a specified edition and year of QuickBooks in silent mode.

.DESCRIPTION
    Uses the product’s MSI uninstall string, passing the required license
    and product keys to remove *all* components quietly and log the results.

.PARAMETER LicenseKey
    QuickBooks license key in the form 1111‑2222‑3333‑444.

.PARAMETER ProductKey
    QuickBooks product key in the form 123‑456.

.PARAMETER VersionName
    Edition name – Enterprise, Premier, or PremierAccountant.
    Default is Enterprise.

.PARAMETER VersionYear
    Two‑digit year that matches the installed major version
    (e.g. "24" for 2024, "23" for 2023, "22" for 2022).
    Default is "22".
#>

[CmdletBinding()]
param (
    [Parameter(Mandatory)]
    [ValidatePattern('^\d{4}-\d{4}-\d{4}-\d{3}$')]
    [string]$LicenseKey,

    [Parameter(Mandatory)]
    [ValidatePattern('^\d{3}-\d{3}$')]
    [string]$ProductKey,

    [ValidateSet('Enterprise','Premier','PremierAccountant')]
    [string]$VersionName = 'Enterprise',

    [ValidatePattern('^\d{2}$')]
    [string]$VersionYear = '22'
)

#‑‑‑ Retrieve installed software from both 32‑ and 64‑bit registry views
$installedApps = Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\*,  HKLM:\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Uninstall\* | Select-Object DisplayName, UninstallString

#‑‑‑ Find the matching QuickBooks entry
$qbApp = $installedApps |
         Where-Object {
             $_.DisplayName -like "*QuickBooks $VersionName*" -and
             $_.DisplayName -like "*$VersionYear.0*"
         } |
         Select-Object -First 1      # in case multiple matches exist

if (-not $qbApp) {
    Write-Warning "QuickBooks $VersionName $VersionYear not found."
    return
}

# The uninstall string typically looks like:
#   "MsiExec.exe /I{GUID}"
# We need just the {GUID} part after '/I'
$guid = ($qbApp.UninstallString -split '/I')[1].Trim()

Write-Host "Starting silent uninstall for QuickBooks $VersionName $VersionYear ..."
Start-Process msiexec.exe -ArgumentList @(
    "/I", $guid,
    "QB_LICENSENUM=$LicenseKey",
    "QB_PRODUCTNUM=$ProductKey",
    "REMOVE=ALL",
    "/qn",
    "/L*V", "C:\QB_Uninstall.log"
) -Wait

Write-Host "Uninstall process complete.  Log written to C:\QB_Uninstall.log"