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Fix Can’t Start QuickBooks – It is Already Running error

QuickBooks is one of the principal accounting software for business owners who want to maintain their finances in an organized and ideal manner, but mostly don’t have a good accounting awareness. In addition to the basic accounting, this software also offers its customers with the invoicing and reporting competence. QuickBooks also offers add-on services that allocate its users to handle things, such as payroll, inventory tracking, and credit card processing.  QuickBooks allows you to keep track of the money coming in and out of your business.

Cant Start QuickBooks

When you launch QuickBooks Integration Manager on your computer, an error shows up “QuickBooks can’t start because it is already running”. When you tap on OK to this error, another error message shows up, QuickBooks is not open. Open it and then try again. QuickBooks Accountant and QuickBooks Enterprise can open more than one company file at one time. Both these errors show up together when the QuickBooks Company file is actually open and is running in Single User Mode only and the user is logged in as an Admin for the system. Even though this company files is not shared on any other computer system. For this error code, a special feature (Instant Start) was built in to allow QuickBooks to start up faster. Howsoever, this aspect sometimes causes QuickBooks not to shut down correctly and then give you the message that it is already running. Technical support number for Quickbooks


This issue is caused because user account control (UAC) is not allowing QuickBooks Integration Manager to establish a connection with QuickBooks company file, even though the QuickBooks software has approved permission for QuickBooks Integration Manager full access. During this Integration process, open one company file so that Web Timesheet Integration Manager can establish a connection to that company file.

To resolve this error, follow the below-given steps:

  • Simply type UAC in the start menu or Control Panel search box.
  • Then tap on the Change User Account Control settings.
  • Pull the slider to the last level at the bottom of the scale.

If still you are confronting the same error, then contacting a third party support providing company that offers you optimized solutions for this is the right choice to go for.

For opening a QuickBooks secondary file:

  1. Navigate to the company file in the file system and double-click the file name.
  2. Double-click the icon that starts QuickBooks.

However, it’s not possible to open a second company file from Open command on the File menu option within the QuickBooks software. At one time, you can only open 2 company files in QuickBooks Accountant and QuickBooks Enterprise Solutions. The first file you open is labeled as Primary with hardly any limitations and the second file is labeled as Secondary with more limitations. In case you close the primary file when two files are open, the secondary file becomes the primary file.

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