Silently Uninstall Quickbooks

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<#
.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"

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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.

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