How to Solve QuickBooks Error 1402

Are you facing QuickBooks Error 1402? If yes, you’re not alone. This error can be frustrating, but it’s possible to fix it. This article will guide you through the steps to resolve QuickBooks Error 1402. We’ll keep the language simple and the steps easy to follow. Let’s dive in!

What is QuickBooks Error 1402?

QuickBooks Error 1402 often occurs when you are trying to install QuickBooks or open it after installation. This error pops up with a message that says, “Could not open key.” This means that certain files on your computer are not accessible, which is necessary for QuickBooks to function.

Why Does Error 1402 Occur?

Error 1402 can happen for several reasons:

  1. Incomplete Installation: If QuickBooks installation is interrupted or not completed properly, it can lead to this error.
  2. Corrupted Software Files: Sometimes, QuickBooks installation files get corrupted.
  3. Windows Registry Issues: The error might occur if the Windows registry is not updated or is corrupted.
  4. Permission Restrictions: If the system doesn’t have the required permissions to access certain registry keys, QuickBooks might throw this error.
  5. Outdated Software: Running an outdated version of QuickBooks or Windows can also cause this issue.

Step-by-Step Solutions to Fix QuickBooks Error 1402

Step 1: Update Your Windows

Make sure your Windows is up to date, as this can fix many errors, including Error 1402.

  • Go to the Start menu.
  • Type Check for Updates and press Enter.
  • If updates are available, install them and restart your computer.

Step 2: Use the QuickBooks Install Diagnostic Tool

QuickBooks provides a tool specifically designed to fix common installation issues:

  • Download the QuickBooks Tool Hub.
  • Install and open the Tool Hub.
  • Go to the Installation Issues tab.
  • Click on QuickBooks Install Diagnostic Tool. Run it.
  • It may take some time. After it finishes, restart your computer.
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Step 3: Repair Your Windows Registry

This step should be handled with care. If you need more confidence, seek help from a professional.

  • Type cmd in the Start menu.
  • Right-click on Command Prompt and choose Run as administrator.
  • Type sfc /scannow and press Enter. This will scan and repair your system files.

Step 4: Reinstall QuickBooks

If the above steps do not resolve the error, try reinstalling QuickBooks:

  • Uninstall QuickBooks from the Control Panel.
  • Download the latest version from the QuickBooks website.
  • Install QuickBooks again. Make sure the installation is complete without interruptions.

Step 5: Modify the Windows Registry Manually

Caution: This step is for advanced users. Mistakes in the registry can cause serious problems.

  • Open the Run dialog box by pressing Windows + R.
  • Type regedit and hit Enter.
  • Navigate to the registry key mentioned in the error message.
  • Right-click on the key and select Permissions.
  • Ensure that the Administrators and SYSTEM are set to Full Control and Read.
  • Save changes and exit.

Step 6: Set up Windows Permissions for the Installation

  • Navigate to the folder where QuickBooks is being installed.
  • Right-click on the folder and select Properties.
  • Go to the Security tab and ensure that the Administrators group has full control.
  • Apply the settings and try installing QuickBooks again.


QuickBooks Error 1402 can be a roadblock, but with the right steps, it can be resolved. Always ensure your system and software are up-to-date, and use tools like the QuickBooks Install Diagnostic Tool to help with common issues. If you’re ever in doubt, don’t hesitate to seek professional help. Following these guidelines will help you get back on track with QuickBooks efficiently and with minimal stress.

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