Articles

How to Troubleshoot QuickBooks Error 12002?

by Natasha Dean Certified Accounting ProAdvisor

The QuickBooks Error Code 12002 has been annoying a plethora of QuickBooks users lately. This error appears when using QuickBooks and generally occurs due to a slow internet connection or due to a network timeout.  There are different solutions to get rid of this error, all of which shall be explained in this article.

QuickBooks Error Code 12002

Factors Causing QuickBooks Error 12002

  • The error could be caused by the firewall or other security software.

  • Erroneous SSL settings.

  • The PC doesn't have enough storage space.

  • The default browser is not set to Internet Explorer.

  • Poor connection with the internet could be another cause.

  • Incorrect system settings related to the Internet.

Procedure to Fix QuickBooks Error 12002

Solution 1: Change Internet Settings

Internet Connection Set Up

  • Access the Run window and type INETCPL.CPL.

  • Press Enter.

  • The next step involves setting Medium-High protection.

  • Go to the Internet option, followed by Security.

  • Click on Connections and choose the LAN settings.

  • Checkmark the box to automatically detect settings

  • Now, uncheck the box beside "Use a proxy server from your LAN".

  • Enter correct I.P. and Port and click on Ok.

  • Proceed to the Advanced tab.

  • Go to Security and click on the option to Use TLS 1.2

  • Press the Ok button.

Solution 2: Make I.E the Default Browser

  • Tap Windows + R keys together.

  • Enter the command “INETCPL.CPL” in the Run box.

  • Click on "Ok".

  • Move on to the Programs tab and choose Internet Explorer as the default browser.

  • Run QuickBooks as an administrator.

Solution 3: Update QuickBooks 

Update QuickBooks Desktop

  • Run QuickBooks as an admin in the No Company Window mode. [Press and hold the Ctrl key]

  • The next process requires the user to visit the Help menu.

  • Pick “Update QuickBooks Desktop”.

  • Now, choose "Update Now."

  • Opt for the "Get Updates" option.

  • Ensure that you choose "Reset Updates."

  • Click "OK" and wait for the downloading to finish.

  • Hit on Close.

  • Run QuickBooks and hit on “Yes" to install the updates.

Solution 4: Discard QuickBooks in the Firewall

  • Click on the "Start" button.

  • Enter "firewall".

  • Open the Windows Firewall.

  • Move on to "Advanced Settings".

  • Right-click "Inbound Rules".

  • Tap the tab labeled "New Rule."

  • Select TCP by clicking on the Port.

  • Tap on Next.

  • Type in the QuickBooks port.

  • For example, for Q.B. 2019, the ports are: “8019, 56728, 55378-55382, 56276, 55368-55372, and 55378-55382.”

  • Click on Allow Connection.

  • Click on Next.

  • Choose each profile from the box that pops up.

  • Name the new rule.

  • Tap on Next, followed by hitting Enter.

  • Repeat the steps for Outbound rules.

Solution 5: Clean Installation of Q.B. Desktop

  • Upon clicking on the start menu, access the Control Panel.

  • Proceed to Programs and Features.

  • Click on QuickBooks and choose Uninstall.

  • Now, rename the QuickBooks folder.

  • Reinstall QuickBooks.

  • Run Q.B. as an administrator.


The information entailed within the purview of this article should solve all your doubts on how to fix QuickBooks Error 12002. For further assistance, feel no reluctance to contact our QuickBooks data repair experts by calling us at +1-800-615-2347.


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About Natasha Dean Freshman   Certified Accounting ProAdvisor

9 connections, 0 recommendations, 40 honor points.
Joined APSense since, April 5th, 2023, From Everett, WA, USA, United States.

Created on Apr 26th 2023 02:10. Viewed 130 times.

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