---
# System prepended metadata

title: 'QuickBooks error 1618: What Is It And How To Fix It?'
tags: [QuickBooks error code 1618, 'QuickBooks Install error 1618, ', QuickBooks error 1618]

---

It is very common to face errors while working on any application; however, if an error strikes the screen while installing the application, it becomes more frustrating. **QuickBooks error 1618** is one such error that happens while you are trying to install the QB application. The error message says, “**Error 1618: ERROR_INSTALL_ALREADY_RUNNING error message when you run the setup program to install QuickBooks programs.**” The error restricts your installation process in the middle and is quite annoying to resolve. However, in this write-up, we will discuss the most effective solutions to resolve the QuickBooks Install error 1618, so follow it up.

> Don’t have the confidence to resolve the QuickBooks Desktop error code 1618 on your own? Don’t worry; call the experts at the Toll-free number **[+1-(855)-955-1942](https://)** and get it resolved in minimum time.




## What are the Possible Causes Behind Error Code 1618 in QuickBooks?

The error 1618 appears in QuickBooks while running the installation setup and is mostly triggered by the runtime library. The other reasons for this installation error are:
* If QB-related programs of files are removed, then the error code 1618 may appear on your screen.
* Windows registry issues can also trigger QuickBooks error code 1618.
* The QuickBooks or certain Windows files are damaged by a virus and are causing the issue.
* If any antivirus is blocking some important files of QB, the error may pop up on the screen.
* Damage in the Microsoft Runtime Libraries installation file might also be a reason for such installation errors.
* If the MSIEXEC process is not running, which is actually important if you want to install any application on Windows, then error 1618 can appear on screen while installing QB.

Read Also: [**How To Resolve QuickBooks Error 1722**](https://dataservicesolutions.com/blog/quickbooks-error-1722/)

## What Are the Ways to Fix QuickBooks Error 1618?

When you know the reasons for the occurrence of error code 1618, you can follow the solutions given below. And afterward, install the QuickBooks application without any errors.
### Fix 1: Update Your Windows Installer to Latest Version
You can update the Windows installer to the latest version to fix the installation error code 1612. So, follow the below-given process for updating the Windows installer.
* First, log in to your system as System Admin.
* Then, click on the My Computer icon.
* Now, open the system32 file of Windows and click right on its exe file.
* After that, select its Properties section as well as the version.
* Here, you will get all the information about the Windows installer on the screen.
* If you find any new updates for Installer, install them and restart your system.

Read More: [**Resolve QuickBooks Reconciliation Discrepancy**
](https://dataservicesolutions.com/blog/resolve-quickbooks-reconciliation-discrepancy-3-easy-steps-to-fix-it/)
### Fix 2: Run QuickBooks Install Diagnostic Tool for error 1618

You can use the QuickBooks Install diagnostic tool to fix minor installation issues in QB, so use this tool for the error code 1618 too. The steps to run the tool are given below:
* First, close all the QuickBooks windows if the application is opened.
* Then download the QuickBooks Install Diagnostic Tool.
* Once the download is completed, run the Diagnostic Tool and agree to its license agreement.
* Now, open the tool and go to its Program Installation Issues tab.
* From here, click the QuickBooks Install Diagnostic Tool, and let it run automatically and repair the installation errors.
* Once the process gets finished, restart the PC to apply the changes.

## Alternate Way of Using QuickBooks Install Diagnostic Tool

You can also download and install the latest version of QuickBooks Tool Hub available for the QB Desktop application. And from its Home Screen, you can go to the QuickBooks Desktop Installation Issues and opt for QuickBooks Install Diagnostic Tool to fix the issues.
If you do not know how to install QuickBooks Tool Hub, go to our blog dedicated to the same.

### Summing Up It All!!

We hope that you will be able to resolve the **[QuickBooks error 1618](https://dataservicesolutions.com/blog/quickbooks-error-1618/)** after following the steps given in the blog above. Though the error is quite annoying, the steps given here are easy and effective in resolving it. Yet, in case of any further assistance, you can directly connect with our QuickBooks Support Team at Data Service Solutions by calling the Toll-free number **[+1-(855)-955-1942](https://)**


**Recommended to read**: **[Resolve QuickBooks Error 6129 With Easy Methods](https://dataservicesolutions.com/blog/quickbooks-error-6129-db-connection-verification-failure/)**