QuickBooks Error 1646 [Resolved]


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QuickBooks software is gaining so much popularity among small and medium-sized businesses. So, it must meet those requirements to remain at the top. But, you may face QuickBooks Error 1646 when you are trying to install QuickBooks desktop premier on your system. Do you need assistance with fixing QuickBooks error code 1646? You’ll be happy to hear that your research has come to an end here! We’ll cover every aspect of QuickBooks error 1646 in this article.

Overview of QuickBooks Error 1646

QuickBooks Error 1646 Overview QuickBooks error 1646 appears when you are installing QBs desktop premier version in your PC that already has QBs desktop pro version of that same year or when you try to install QBs Accounting software on your system but it has a premier version already installed in it. You will see a pop-up “Error 1646 installing quickbooks.msi uninstallation of the update package is not supported”.

Possible Causes of QuickBooks Error 1646

We are aware that the error installing .msi returned 1646 QuickBooks is frustrating, especially when it abruptly ends your tasks. To fix this, you should be aware of the issue’s root cause. As a result, you can prevent this in the future.
  • The temporary folder that you are using is full.
  • If you’re working on an old version of the Operating System.
  • Your company file gets locked.
  • It’s possible that the installation procedure isn’t receiving permissions.
  • You have installed Microsoft Net 1.1 SP1 inaccurately.

Symptoms of QuickBooks Error 1646

Here are the symptoms to watch out for if you want to recognize QuickBooks error code 1646: No Company Open
  1. Not able to open QBs file on your PC.
  2. It will show you an error message on your screen.
  3. QuickBooks will not get any updated information.
  4. Your computer gets crashed when you are trying to open QBs.
  5. The user input like a mouse or keyboard will respond steadily.

Troubleshooting Steps for QuickBooks Error 1646

Regardless of the damage they create, errors must be fixed to prevent further problems. However, there are several tasks you must complete beforehand.

 Step 1: Uninstall QBs Desktop

Sometimes the wrong installation of QuickBooks desktop may result in QuickBooks error code 1646. So, in that case, you need to uninstall it by looking at the steps: Uninstall QBs Desktop
  • Tap on the Start option and then hit on the Control Panel.
  • Then select the Programs & Features menu or click on Uninstall a program.
  • Now, select the version that you are using of QBs desktop.
  • Choose Uninstall and then click on the Remove option.
Note: Now you are required to change the name of the Installation Folder remotely just by mentioning .old to the end of the folder name. This will avoid your QBs software from accessing that folder and it will create the latest folder by not accessing your rename folder.
Read More - How to Install QuickBooks on more than one Computer?

Step 2: Verify the “Product Information” in QBs Desktop

You may have entered the wrong information about any product that is creating problems in exporting files from QuickBooks. It is better if you check the information by following the instructions: Verify the product information in QuickBooks Desktop
  • Firstly, start your QBs desktop and press the F2 key.
  • It will show you product information on your window.
  • You need to write down the details like the license number & Product Key.
  • Lastly, don’t forget to write the product year & version.

Step 3: Restore your QBs Desktop Software

After following any of the steps, you can fix this error. Now, try to restore your QBs software backup by looking at the procedure below: Restore your QBs Desktop Software
  • For that, you need to have Product & license information in your hand.
  • Follow the on-screen commands as you continue the installation procedure.
  • Once done, start the QBs software and see if the error is eliminated or not.


Hopefully, you can resolve QuickBooks Error 1646 by using any of the steps mentioned above. But, in case you find yourself stuck anywhere then don’t wait just give us a call. We will guide you and you can use QuickBooks again with no errors. You can also get assistance on other QuickBooks-related queries anytime. 

Frequently Asked Questions (FAQs)

Q1. How do I fix error code 1712 in QuickBooks?

  • Make a “New Windows User” with Administration Rights.
  • Use ‘Quick Fix My Program Utility’.
  • Get the latest version of Windows.

Q2. Where is QuickBooks MSI?

Answer – If you are running a setup.exe file that doesn’t start the installation then you can run the msi file located in the QuickBooks folder.

Q3. How do I run a doctor file in QuickBooks?

  • You need to choose Company File Issues within the tool hub.
  • Then Run QuickBooks File Doctor.
  • Wait till it fixes the issue and you will be able to use the error-free file.

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