Fix QuickBooks Error Code 1646 Using 4 Easy Steps [Solved]

Talking about the QuickBooks error 1646, this prompt often appears on the screen, when the user tries to install QuickBooks desktop premier on a system that is having QuickBooks desktop pro of the same year already installed. This error can also be seen while installing QB accountant on a system that already has a premier version installed that too of the same year. This error comes up with an error message stating “Error 1646 installing quickbooks.msi uninstallation of the update package is not supported”.

Below we have discussed the steps to fix the QuickBooks error code 1646. But if you need any support at any point of time, call us right away and leave the rest on QuickBooks professionals.


Read this also: Resolve QuickBooks error code 12029 

Steps to Fix QuickBooks Error 1646 while installing quickbooks.msi 

The user can simply carry out the clean install tool to resolve the QuickBooks error 1646. A clean install will not affect the accounting data as the company file and everything it holds aren’t involved at all.

• The user will first have to gather the product information
• The user is required to download the installer for the version of QuickBooks
• And then, make sure to have the license number in hand
• The user is also required to write down the QuickBooks product year and version
• Uninstall QuickBooks desktop
• The user will have to remove QuickBooks by opening the start menu and then looking for control panel and opening the same
• After that, select programs and features or uninstall a program
• The next step is to select version of QuickBooks desktop you are having issues with
• Also, select the uninstall or change and then remove and hit next
• After that rename the QuickBooks desktop installation folders manually
• The next step is to reinstall QuickBooks desktop

Towards the end of this post, we hope that the steps above might help in fixing the QuickBooks error 1646. But if you still face the error code 1646, then do not hesitate in calling us at 1-888-291-2294.

We are a team of QuickBooks error support professionals and certified ProAdvisors, who would help in fixing the issue.