Due to an update from a firewall or any other security program that has been installed on your device, you may encounter QuickBooks error 1406, and it may appear randomly while you are working on the application.

For this error code, you may see an error message," Error 1406. Could not write a value to key \CLSID\{D27CDB6E- 11CF-96B8-44553540000}\InprocServer32. Verify that you have sufficient access to that key, or contact your support personnel."

Go through the blog thoroughly to gain clearer insights into this error by understanding its root cause and available resolution tactics. 

Main Reason Behind the Occurrence of the QuickBooks Error Code 1406

The main reason for error code 1406 in the application is conflicting third-party software running in the background.

However, learn more about the root causes in this segment:

• Disruption by the security software or the firewall on the system can cause this error
• Any corruption or damage in the Windows registry can encourage it
• Multiple users are trying to switch or move the application on the system
• If you are an untrusted Windows user, then you can get this error
• Maybe you don't have proper admin rights, or you are not logged in as an admin

Note:- QuickBooks Error PS034 occurs when payroll updates fail, and resolving it ensures smooth processing and uninterrupted QuickBooks performance. 

Step-by-Step Guide to Solve the QuickBooks Error 1406

 To completely remove the error code 1406 from your system, you need to have proper procedures, which we have discussed below:

Step 1: Rectify the Windows Registry​

• Tap Windows + R to get Run on your screen
• In the text box of the Run Window, you need to type Regedit > click the Enter key to open the Registry Window
• Find the following path within the registry :

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\iaSTOR registry key

• At the end, confirm that you have assigned all the keys to the Administrators group

Step 2: Turn off the antivirus software

• Press the right key on the Antivirus icon on the bottom right side of the taskbar
• Select " Turn off/disable the antivirus protection
• Now restart the system to see if the error is resolved or not

Step 3: Launch the QuickBooks Install Diagnostic Tool

• Download the QuickBooks Tool Hub application from the official Intuit site
• Now save the file on your system
• Then double-click on the file to install the tool hub on your device
• Go to the Installation Issues tab and look for the QuickBooks Install Diagnostic tool tab
• It will require some time to complete the scanning process, but once the process is done, you will need to restart your system

Step 4: Download the latest Windows updates

• Move to the Windows update by typing Update in the Start menu
• Double-click on the Windows update icon to run the update window
• Then look for the Check for updates option
• Select the required updates and download
• Then, restart and allow your system to install these updates
• As the startup screen appears, run your QB application

Step 5: Restore your device

• Move to the Program tab with the help of the Start menu
• Click on the System Tools option
• Select the Restore the system
• Now you can also access the System Restore window by looking for the Restore word in the Start menu
• Now, double-click the System Restore icon > click on Next
• Tap on the Next option again on the confirmation Window
• It will require some time to finish the procedure, and you will be required to wait
• Then, as the procedure is complete, your system will automatically restart and re-run the application

Learn More About:- QuickBooks Error PS077 appears during payroll updates, and fixing it helps maintain accurate tax calculations and seamless employee data management.

Conclusion

In this blog, we have outlined the best possible ways to resolve QuickBooks error 1406 on your system using expert-suggested solutions.

Moreover, to get more information regarding the application or the error, you feel free to dial +1(855)-738–0359 to connect with our team, as they are available to help you 24/7. 

Frequently Asked Questions — QuickBooks Error 1406

What is QuickBooks Error 1406?

• QuickBooks Error 1406 appears when the installer or updater cannot write a value to the Windows registry, usually because the installer lacks permission or a registry key is corrupted.

Why does Error 1406 occur during QuickBooks installation or update?

• This error commonly occurs when user account permissions are insufficient, the Windows registry is locked by another process, or the registry entry is damaged or missing.

How can I tell if Error 1406 is caused by permissions or a corrupt registry?

• If the error message mentions "cannot write to the registry" or names a specific registry key, it indicates a permissions or corruption issue. Permission problems often occur when running the installer from a non-administrative account.

Will Error 1406 damage my QuickBooks company file or accounting data?

• No, Error 1406 is an installation/registration issue and does not directly alter company data. However, failing to install or update properly can prevent QuickBooks from functioning until resolved.

What is the safest first step to fix QuickBooks Error 1406?

• Start by closing all programs, restarting the computer, and running the QuickBooks installer as an administrator to ensure it has the necessary permissions to modify the registry.

Should I change registry permissions myself to fix Error 1406?

• Modifying the registry can be risky. If you are comfortable and confident, you can adjust permissions on the specified key using the Registry Editor, but always back up the registry or create a system restore point first.

Can antivirus or third-party software cause Error 1406?

• Yes, security software or background utilities may lock registry keys or block installer actions. Temporarily disabling such software for the install attempt can reveal whether it's causing the error.

Does running the installer in Safe Mode help resolve Error 1406?

• Running Windows in Safe Mode (with networking if needed) reduces background processes that may lock registry keys and can allow the installer to complete successfully.

Is reinstalling QuickBooks necessary to fix Error 1406?

• Not always. Many cases are resolved by fixing permissions, repairing Windows components, or using the QuickBooks Clean Install Tool. Reinstallation is a last resort after backing up company files.

How can I prevent Error 1406 from happening again in the future?

• Keep Windows and QuickBooks updated, run installations as an administrator, maintain a single active antivirus configuration, and avoid abrupt shutdowns during updates to reduce registry corruption risk.

Are there QuickBooks tools that can help fix Error 1406 automatically?

• QuickBooks provides diagnostic and clean install utilities that can repair installation components and remove remnants of previous installs, which often resolves registry-related errors.

What should I do if I'm not comfortable editing the registry but Error 1406 persists?

• If the error persists and you're unsure about registry edits, seek professional technical assistance to avoid accidental system damage; ensure you have recent backups of your company files before any major repair.