Error 15104 in QuickBooks may appear when upgrading QuickBooks payroll or QuickBooks Desktop. The issue is most usually caused due to a corrupted QuickBooks installation file. Let's take a sneak peek into the main causes contributing to QuickBooks error code 15104, and after that, learn the solutions to solve it.

Common factors leading to QuickBooks Error 15104

  • This issue could be caused by faulty Internet Explorer.
  • QuickBooks switched to single-user mode.
  • Windows registry issues may also lead to QuickBooks Error 15104.

Most effective solutions to fix QuickBooks Error 15104

Solution 1: Restore the System

  • Select the System Restore tool from the start menu.
  • Choose the Restore Point.
  • Click on Finish, and then select Next.

Solution 2: Installing QuickBooks (Selective Startup mode).

Step 1: Assembling information

  • Make a backup of the QuickBooks company files first.
  • Use your original license and product keys for the backup.

Step 2: Access the Selective Startup Mode

  • Use the Windows and R keys to launch the Run window.
  • Type "Msconfig" into the Run box, then click "Ok."
  • Access the General tab.
  • Select Selective Startup and Load System Services.
  • Choose the Service tab.
  • Next, select "Hide all Microsoft services".
  • Click on "Disable all."
  • Check the Windows Installer box in the services list.
  • Finally, click on Restart from the system configuration window.

Step 3: Reinstall QuickBooks

Step 4: Running QuickBooks in the Normal Mode

  • Access the Run window.
  • Type Msconfig and hit Enter.
  • Go to the General tab in the System Configuration window.
  • Select Normal Startup under the General tab.

  • Click on "Ok."

Solution 3: Employ a third-party Cleaner Tool

  • Download and install a reliable third-party cleaning application for the cleaning process.
  • To install the tool, double-click the .exe file upon downloading the tool.
  • Run the program after installation, and enable it to identify and correct any issues with the QuickBooks files and registry entries.
  • Restart the PC when the procedure is finished.
  • Finally, run QuickBooks to check whether Error 15104 was rectified.

You may also read: How To Troubleshoot Payroll Service Server Error or Payroll Connection Error in QuickBooks?

With that, we culminate this blog on the various solutions to fix QuickBooks Error 15104. For further assistance, connect with our experts at the helpline 1 800 761 1787.