If you purchased QuickBooks Desktop 2018 and need to reinstall it on a new or reformatted machine, this guide walks you through the complete process. Intuit ended support for QuickBooks 2018 in May 2021, but existing license holders can still reinstall and use the software for local accounting tasks. This is not a guide for purchasing a new license - it is a reinstallation reference for users who already own a valid copy.
Having trouble with your download or installation? Call support for direct help.
+1 (800) 446-8848What Is QuickBooks Desktop 2018?
QuickBooks Desktop 2018 (internal version 18.0) was released in late 2017 and offered three main editions: Pro, Premier, and Enterprise. Each edition targeted a different business size, from solo operators to large organizations with advanced inventory and reporting needs.
Notable features introduced or improved in the 2018 version included:
- Multi-monitor improvement - expanded multi-window support that made it easier to work across multiple displays simultaneously
- Mobile inventory scanner - a new companion feature allowing users to scan barcodes with a mobile device and sync inventory directly into QuickBooks
- New and improved reports - updated financial reports with better filtering and customization options
- Smart Help - an enhanced in-product search experience that surfaced contextual help content
- Payroll liability reminders - automated reminders for upcoming payroll tax deadlines to reduce compliance errors
These additions made QuickBooks 2018 a well-regarded release, and many small businesses held onto it past its official support window due to its stability and feature set.
Important Notice: End-of-Life Status
Intuit officially discontinued support for QuickBooks Desktop 2018 in May 2021. After that date, the following services became unavailable:
- Payroll updates - tax table updates and payroll processing are no longer available, making the software non-compliant for active payroll use
- Bank feeds - automatic transaction downloads from financial institutions no longer function
- Security patches - no further vulnerability fixes or software updates are released
- Live technical support - Intuit agents will not assist with 2018-specific issues
If you are running QuickBooks 2018 in a business environment, Intuit strongly recommends upgrading to a current subscription version such as QuickBooks Desktop Plus or QuickBooks Online. Running unsupported financial software introduces security and compliance risks that can affect your business data and reporting.
That said, for users who simply need to reinstall a legitimate copy for local reference or historical records, the steps below will guide you through the process.
System Requirements for QuickBooks 2018
Before downloading or reinstalling, confirm your machine meets the minimum specifications:
- Operating System: Windows 7 SP1 (64-bit), Windows 8.1 (64-bit), or Windows 10 (64-bit)
- Processor: 2.4 GHz minimum
- RAM: 4 GB minimum (8 GB recommended for better performance)
- Disk Space: 2.5 GB of available storage (additional space required for company files)
- Screen Resolution: 1024x768 or higher
- Internet: Required for initial activation and any online features
- .NET Framework: Microsoft .NET 4.5.2 or later
- Internet Explorer: Version 11 or later
Note that Windows 11 compatibility is not guaranteed for QuickBooks 2018. Intuit has not released patches to address Windows 11 compatibility issues for end-of-life products. If you are running Windows 11, you may encounter installation or runtime errors.
Before You Begin
Gather the following before starting the download:
- Original license number and product key - a 15-digit license number and product key from your original purchase confirmation email or retail packaging
- Intuit account credentials - the email and password associated with the Intuit account used to purchase or register the software
- Administrator rights - you must be logged into Windows as an administrator to install QuickBooks
- Stable internet connection - the installer is several hundred megabytes and requires a reliable connection
If you cannot locate your license number, log into your Intuit account and visit the Manage My Licenses section. Intuit also provides a license lookup tool through the account dashboard. Note that Windows 11 users should be aware that QuickBooks 2018 was not tested or certified for Windows 11, and compatibility issues may require running the software in compatibility mode.
Having trouble with your download or installation? Call support for direct help.
+1 (800) 446-8848Step-by-Step Download Guide
Follow these steps to locate and download the QuickBooks Desktop 2018 installer:
- Open a browser and go to https://accounts.intuit.com and sign in with your Intuit account credentials.
- From your account dashboard, navigate to Downloads and Updates (sometimes listed under Products and Services).
- Locate QuickBooks Desktop 2018 in your list of registered products. If you registered your license, it should appear here.
- Select the correct edition (Pro, Premier, or Enterprise) and confirm you are downloading the Windows version.
- Click Download and save the installer file to your desktop or downloads folder.
- If QuickBooks 2018 does not appear in your account, contact Intuit Support directly and reference your original order confirmation. They can provide a legacy download link for verified license holders.
If you cannot access the installer through your account, do not use third-party download sites. Unofficial installers frequently contain malware or modified builds that can compromise your financial data.
Installation Steps
Once the installer file has downloaded, follow these steps:
- Right-click the installer file (typically named `QuickBooksInstaller.exe`) and select Run as administrator.
- Accept the Intuit license agreement when prompted.
- Choose Custom or Network if you are setting up multi-user mode, or select Express for a single-user installation on one machine.
- Enter your license number and product key when prompted.
- Choose an installation location or accept the default path (`C:\Program Files (x86)\Intuit\QuickBooks 2018`).
- Click Install and allow the installer to run. This may take 10 to 20 minutes depending on your system.
- When the installation completes, click Open QuickBooks or launch it from the Start menu.
Activation
After installation, QuickBooks 2018 will prompt you to activate the software:
- Open QuickBooks and go to Help > Activate QuickBooks.
- Enter your license number and product key in the activation window.
- If online activation succeeds, QuickBooks will display a confirmation message and the software will be fully functional.
- If online activation fails (which may occur for older or legacy licenses), select the Phone Activation option. QuickBooks will display a validation code. Call the number shown on screen and provide the code to an automated system or agent, who will give you an activation response code to enter.
Keep a record of your license and product key in a secure location for future reinstallation needs.
Troubleshooting Download Issues
".NET Framework" errors during installation - QuickBooks 2018 requires .NET 4.5.2 or later. Open the Windows Control Panel, go to Programs and Features > Turn Windows features on or off, and verify that .NET Framework 4.5 or higher is enabled. If not, enable it and restart before running the installer again.
Internet Explorer 11 requirement - QuickBooks 2018 has a dependency on Internet Explorer 11 for certain internal components, even on machines where you use a different browser. Ensure IE 11 is present on your system via Windows Features.
Antivirus blocking the installer - Some antivirus programs flag QuickBooks installers as potentially unwanted programs. Temporarily disable real-time protection during installation, then re-enable it once QuickBooks is installed and verified.
Installer not found in your Intuit account - If the 2018 version does not appear under Downloads and Updates, your license may not be linked to your current account. Try signing in with any alternate email addresses associated with your original purchase, or contact Intuit support with your order confirmation number.
Windows 11 compatibility issues - If the installer fails on Windows 11, right-click the installer file, select Properties, navigate to the Compatibility tab, and check Run this program in compatibility mode for Windows 10. Then run it as administrator. Some users also report success running the software inside a Windows 10 virtual machine.
Installation hangs or freezes - Close all background applications before running the installer. Disable Windows Update temporarily if it is running in the background, and ensure your system has enough free disk space beyond the minimum requirement.
Expert Insight
QuickBooks 2018 was a popular version and I still see it in small businesses that delayed upgrading. The problem is that May 2021 was the last payroll update, which means anyone using it for payroll has been out of compliance for years. For accounting-only use it still works, but the bank feed cutoffs are coming.
Emily Carter
CPA & Fintech Content Specialist