Learn how to fix QuickBooks EventID 4 – An Unexpected Error has Occurred in QuickBooks: Returning NULL QBWinInstance Handle

This article is related to troubleshooting of QuickBooks error “EventID 4 – An Unexpected Error has Occurred in QuickBooks: Returning NULL QBWinInstance Handle”. As we know about it that QuickBooks is a best accounting software program that is widely used for small or large business entrepreneurs. This software has many advanced features which helps entrepreneurs to manage their accounting with ease.

However, few QB users deal with some error messages sometimes. In this blog, we are going to discuss about one of the most common error .i.e. ‘QuickBooks EventID 4‘. Let’s review on this error and know the possible steps to solve this error.

Error Messages You May See on Your Desktop Screen:

Integration Manager could not connect to QuickBooks. Please make sure that it is open


QuickBooks Event ID 4 – An unexpected error has occurred in “QuickBooks”: Returning NULL QBWinInstance Handle

QuickBooks Event ID 4 Error Message - Screenshot
QuickBooks Event ID 4 Error Message – Screenshot
You can also read: How can I fix QuickBooks abort error?

What Causes QuickBooks Event Log ID 4 Log Error 4?
Windows .NET Framework 4.0 SP 1 on a Windows 7 computer
Other windows components do not function properly
Steps to Solve QuickBooks Event Log ID 4 Error
Below are few steps to resolve this error.

Solution 1: Reinstall .Net Framework on Windows
Repair or Reinstall Microsoft .NET Framework - Screenshot
First of all you need to Press Windows + R keys together at same time. This will open the Run window on your system.
After that type appwiz.cpl in the Run dialog box.
Now Press Enter key, on your keyboard.
There is an option of to Add/Remove all programs, under the programs and featured list.
Locate and click on the Microsoft.NET Framework 3.5 or later versions.
Choose Uninstall option. (Note: This will take 1-2 minutes to uninstall the program).
Once the uninstall process completed restart your system once.
When restarts completed you have to repeat the step 1 to open the Run windows on your system.
Type Control Panel to open the control panel.
Now you will see the Add/Remove programs or Programs & Features window.
There is an option to Add or Remove Windows Features that is located on the left hand side of the windows.
Now click on Add or Remove Windows Features option.
From the list of the programs hit a click on Microsoft .NET Framework to expand.
Check-mark the first and second box.
Press OK.
(Note: Microsoft .NET Framework installation will start after clicking on the OK button)
Click on the finish button once and the whole task is over.
Once the installation will successfully complete for Microsoft .Net Framework 3.5, just restart your system and open QuickBooks Integration Manager once again.
Read Also: How to Print Form 1099 and 1096 in QuickBooks Desktop?

Solution 2: Run QuickBooks Install Diagnostic Tool
Download QuickBooks Installation Diagnostic Tool - Screenshot
Firstly, Download QuickBooks Install Diagnostic tool.
After that Install this tool on your system.
You need to follow the instructions as they given on your desktop screen while installing it to on your system.
Once the installation is completed, Exit all the running application on Windows.
Finally run the QuickBooks install diagnostic tool to repair your problems and restart your computer.
Read this also: What does QuickBooks error code 61686 means?

I hope you may found this blog valuable and by following these steps you have successfully solved your QuickBooks event Log error 4. However, if you have any issue or queries, you can take expert’s advice and immaculate services by dialing our QuickBooks error support number i.e. 1- 801-938-3241. We are always ready to serve the flawless services that suits your business.

Thanks for visit us. I hope to see you soon here for solving all your accounting related problems.

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