Saturday, June 3, 2023

Practical Solutions to Rectify QuickBooks Error 176109

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QuickBooks’ invalid product number may suddenly lead to an error popping up on the screen, hampering a user’s routine.

QuickBooks Error 176109 is an invalid product number QuickBooks POS registration error that arises when you activate or access QuickBooks Desktop POS after installation. This error triggers an error message that states, “Error code 176109: Invalid Product Code or Invalid Product Number.” But, apart from using an incorrect product activation key, there could be other reasons that can evoke QuickBooks POS’s invalid product number, and there can be more than one solution to rectify this error which you will find in this article.

Struggling with the steps? We are just a call away; dial us at +1(855)-738-0359 immediately.

Easy Solutions to Rectify QuickBooks Invalid Number Error

Below, we have mentioned some solutions that will help you eradicate QuickBooks Invalid Number errors.

Solution 1: Try removing all the Items inside the Entitlement Folder

The files inside the Entitlement Client folder get corrupted and can trigger various running QuickBooks and POS. 

  • Head to C:\ Program Data \Intuit\ Entitlement Client\ v8 and tap on Control + A to choose all the files inside the folder.
  • Hit the Delete Key, and for confirmation, click on Yes.
  • Now access the QuickBooks POS and try registering the application again. 
  • If you still see QBPOS’s invalid product number, jump to the next resolution.

Read more : QuickBooks Update Error 15243

Solution 2: Try Renaming WS Activity File to Resolve the Error 

The damage in the WS Activity file is also why you can experience QuickBooks product number list errors while running QuickBooks Desktop POS. 

  • First, go to C: \Program Data\ Intuit\ QuickBooks Point of Sale\ Ini folder.
  • Now right-click the WSActivity file and rename it to OLDWSActivity.
  • Quit this window and erase the Entitlement folder once again.
  • Now access QuickBooks POS and check for the invalid product code error.

Solution 3: Try Reinstalling QuickBooks Desktop POS to Rectify the Error 

Installing QuickBooks Desktop again is the last resort to get rid of error 176109, the incorrect product number of QuickBooks. 

  • Press the Windows Start button and choose Control Panel.
  • Now under Control Panel, go to Programs and Features and select Uninstall a Program.
  • Nex double-clicks QuickBooks POS from the list and chooses Uninstall/Change.
  • Tap on Uninstall, and wait for the uninstallation process to complete.
  • Also, copy the POS data folder to the desktop and modify its name by adding OLD at the end.
  •  It will stop QuickBooks POS from recognizing the folder and lead to it creating a new one. 
  • Now, you need to undertake the following steps to erase the QBPOSDBSrvUSER Windows user and rectify QuickBooks POS invalid product number Windows 10:
  • Head to the Control Panel from the Start menu and look for User Accounts.
  • Next, select Manage another account and click Continue in the user account window.
  • Find the list and click on QBPOSDBSrvUSER and choose to Delete the account.
  • Now confirm to delete the folder and reboot the system to apply the adjustments to manage the QuickBooks change product number issue.


QuickBooks POS error 176109 can be quite annoying, and we hope that you can get rid of this error through this article. However, if that’s not the case, you can also contact us at +1(855)-738-0359 for technical help.

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