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A proper way to Resolve QuickBooks Error Code 15240

QuickBooks' popularity is amazing as it offers accounting features that easily make managing vendors, customers, and employees and filing various taxes online easy. It is important to update QuickBooks and its features regularly for uninterrupted operations and for it to be error-free. Updating QuickBooks and its features needs proper internet connectivity and the correct application setup. Whenever the QuickBooks desktop application encounters internet connectivity issues, it throws different errors on the screen, and one of them is QuickBooks Error 15420. QuickBooks error 15420 can be quite a tricky error, but at the same time, it can be resolved. Finally, this article mentions effective troubleshooting solutions that will help you to rectify QB error code 15420 quickly, so stick to the end.

Sometimes simple troubleshooting doesn't help; in such a case, please ring us at +1-855-738-0359 to get help from our support team.

Easy Solutions to Eliminate QuickBooks Error Code 15420

QuickBooks Error 15420, even though irritating, is quite easy to resolve. Below, we have mentioned some effective troubleshooting solutions that will help you eliminate this error quickly.

Solution 1: Allow the Permissions for the QuickBooks Installation Folder to Rectify the Error 

The first solution is to permit the permissions for the QB installation folder, which will help you to rectify this error.

  • Quit the QuickBooks Desktop application and launch Windows File Manager.
  • Go to C:\Program Files\ folder and then right-click the Intuit folder.
  • Press Properties and tap on the Advanced tab.
  • See if the User Group is set to be the Owner and click on the Advanced Security Settings section.
  • Press Change left to the Owners section and under the Enter the object name to select the section.
  • Type the names of the Users and then tap on Check Names.
  • Hit OK, then checkmark the Replace owner on the sub-containers and objects section.
  • Press Apply and OK, then under the Permissions section, choose the Users.
  • Select Full Control, again click Apply, and then hit OK.

A recommended to read article:- QuickBooks Enterprise Errors

Solution 2: Allow the QuickBooks Executable Files to go through the Windows Firewall to Rectify the Error 

Another solution you can implement is allowing the QB executable files to go through the windows firewall by following these steps.

  • Access the firewall program you are using on your system and locate the settings.
  • If you see qbw32.exe or qbupdate.exe processes in the list of programs which is blocked by the firewall, eliminate the restrictions from these two processes.

  • Now, make sure that your firewall does not block ports 80 and 443.

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Solution 3: Change the Internet Explorer's Security Settings to Resolve the Error 

In this solution, we will change Internet explorer's security settings by following these steps.

  • Access Internet Explorer and tap on the Tools icon at the top right corner.
  • Navigate to the Advanced tab, and under the Security section, checkmark the Use SSL 3.0 and Use SSL 2.0
  • Press Apply and hit OK to end the process.


QuickBooks Update Error 15420 is an annoying error that QuickBooks users commonly encounter. But you don't need to worry if you are experiencing QuickBooks error 15420, as this error is quite easy to eliminate; this article will find effective solutions that will help you eliminate this error quickly. If the error persists, you can contact us a+1-855-738-0359 9 to get guidance from our technical team.

Check on my website :- How to Fix QuickBooks Update Error 15212

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