Solution: Update the Windows Installer on your desktopīefore you try out anything else, we would suggest that you update your Windows Installer. The QB related files or Windows files are hit by malware or a virus.If you have mistakenly deleted the Quickbooks related program file that will also cause this issue.There is a chance that the update was left incomplete on the last try.Maybe the installation of your Quickbooks software is corrupted.Just try to check which of them is most apt. But the ones that are most common are given below. You can get multiple reasons that will cause this issue. What might have caused QuickBooks Error Code 1618? That will help you in resolving the issue quickly.

“ERROR_INSTALL_ALREADY_RUNNING” error message when you run the Setup program to install QuickBooks programs.” So let’s have a look at the multiple aspects of this error. If not this, you will get the warning pop up message stating “Error 1618. Many times, you will also get the error message stating- “there was a problem in installing the Microsoft Runtime library.” This is also a cause of QuickBooks Error 1618 code. This is one of those errors that can be seen while updating or installing the program. Most users remain unsure of what should be done and how it should be done. Determination of the reason, symptoms, and cause are quite vague and innumerable. And most people are unaware of the facts. If you have bumped into the QuickBooks Error 1618 there are so many things that would have caused this problem.

Quickbooks error code 1618