How to Resolve QuickBooks Error Code 6000, 816?
How to Resolve QuickBooks Error Code 1618 – Description
QuickBooks Error Code 1618 appears when another Windows installation process is already running in the background while QuickBooks is trying to install, update, or repair itself. This error is associated with the Microsoft Windows Installer (MSI) service, which prevents multiple installation processes from running at the same time. When this service gets stuck or conflicted, QuickBooks cannot proceed with the installation or update.
Common Causes of QuickBooks Error 1618
This error typically occurs due to:
Another Windows Installer process actively running or stuck
Multiple installation/update processes running simultaneously
Outdated or damaged MSI components
Issues in the Microsoft .NET Framework
Conflicts with background applications or antivirus software
System registry errors or corrupted installation files
Methods to Fix QuickBooks Error 1618
1. Restart the Computer
A simple reboot clears any active installer processes and frees locked system resources.
2. Close Windows Installer Processes from Task Manager
Sometimes the installer gets stuck in the background.
Press Ctrl + Shift + Esc to open Task Manager
Go to the Processes tab
Look for msiexec.exe
Select it and click End Task
Restart QuickBooks installation or update
3. Run QuickBooks Install Diagnostic Tool
This tool automatically fixes issues with:
Microsoft .NET Framework
MSXML
C++ components
Windows Installer conflicts
Steps:
Download and install QuickBooks Tool Hub
Open the Installation Issues tab
Run QuickBooks Install Diagnostic Tool
Restart your system after the scan
4. Restart the Windows Installer Service
Resetting the service may fix stuck MSI-related processes.
Press Windows + R, type services.msc
Scroll down and find Windows Installer
Right-click > select Restart
Try installing or updating QuickBooks again
5. Update Windows
Outdated Windows components can cause installation errors.
Open Settings > Updat