A Detailed Guide on How to Fix the QuickBooks Error 176109

Triggered by a warning message that says “Error code 176109: Invalid Product Code or Invalid Product Number”? It means that you have encountered the QuickBooks error 176109. The issue pops up when you open QuickBooks Point of Sale or when completing the registration of QuickBooks Point of Sale. You can come up with this error due to many reasons, out of which the major reasons have been listed in this article. Besides, we have also explained the step-by-step process of eliminating the issue. Have a look at it till the end for a thorough understanding. 

Have a conversation with our team of certified experts through Toll-Free 1.800.579.0391 if you cannot resolve the error code 176109 in QuickBooks Desktop. 

Primary Reasons that Provokes the Error Code 176109 in QuickBooks

You might not be able to understand what exactly triggers the issue, right? Go through the reasons given below- 

  • You might have provided the wrong product code during the installation of the QuickBooks Desktop Point of Sale. 
  • You might have forgotten to sign in to your computer as the administrator. 

Proceed to the next topic that describes the best troubleshooting methods for the problem. 

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Two Most Effective Troubleshooting Methods to Eliminate QuickBooks Desktop Error 176109

Have you failed to search for the best solutions in order to get rid of the error 176109 in QB Desktop? Then, you must check the solutions mentioned here. Make sure to follow each and every step precisely- 

SOLUTION 1: Perform the Clean Reinstall Procedure

  • The first step involves removing the QuickBooks Point of Sale. To do so, open Control Panel on your desktop. 
  • Click on the ‘Programs and Features’ option. 
  • After you see the programs list on your screen, choose ‘QuickBooks Desktop Point of Sale 18.0’. 
  • Next, click on the ‘Uninstall/Change’ option. 
  • To uninstall it successfully, move forward with the prompted instructions. 
  • Now, you need to edit the names of all the Point of Sale folders by adding ‘.OLD’ at the end of each folder name. 
  • Once done, delete the QBPOSDBSrvUser Windows user.
  • To perform that, go to Control Panel and click on ‘User Accounts’. 
  • Select ‘Manage another account’ and when the window opens, hit ‘Continue’. 
  • Choose ‘QBPOSDBSrvUser’ to ‘Delete the account’. 
  • Finally, restart the computer system and re-install the QuickBooks Desktop Point of Sale. 

SOLUTION 2: Entirely Remove the Files Stored in the Entitlement Client Folder

  • At first, open the Windows Explorer page. Press the ‘Windows + E’ keys. 
  • Double-click on the C: Drive and go to the Entitlement Client folder. 
  • Now, select all the files collectively by pressing the ‘Ctrl + A’ keys on your keyboard. 
  • Delete them, and to confirm the deletion, hit on the ‘Yes’ option. 
  • Access the QuickBooks Desktop Point of Sale again to register it. 

The troubleshooting methods in this article must rectify the QuickBooks error 176109 successfully as we have provided the most relevant solutions. However, if the error does not go away even after applying these solutions, there might be some minor glitch that is preventing you from removing the issue. In such a case, immediately reach out to one of our experts by dialing Toll-Free 1.800.579.0391.  

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