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Effective Ways to Rectify QuickBooks Invalid Product Number

QuickBooks Error 176109

QuickBooks invalid product number may cause an error to flash on the screen suddenly, hampering a user’s routine. Let’s dive into the error code causes of the issue and ways to rectify it quickly and seamlessly.

One of the most common errors QuickBooks POS users encounter while utilizing QB Point of Sale is QuickBooks Error 176109. This error usually occurs when a user tries to register or open a POS. It displays an error message “Invalid Product Code / Invalid Product Number QuickBooks” on the user’s computer screen.

Several reasons can trigger this error in Point of Sale, and we need to investigate each of them to rectify the issue. For detailed information, follow the entire article until the end and learn how to solve invalid product number in QuickBooks.

If you find it challenging to fix the point of sale invalid product number in QuickBooks, reach out to our Point of Sale Support at the Phone Number . The professional experts will be available at your assistance with their expertise

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What is the meaning of QuickBooks Error 176109?

QuickBooks Error 176109 is an invalid product number QuickBooks POS registration error that appears when you activate or launch QuickBooks Desktop POS after installation. This error triggers an error message that reads “Error code 176109: Invalid Product Code or Invalid Product Number.”

However, apart from using an incorrect product activation key, there could be other reasons that can trigger QuickBooks POS invalid product number that you will find in the next section of this article.

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What Technical Issues Triggers Error 176109 in Point of Sale

QuickBooks Point of Sale is a different version of QuickBooks specially developed to deal with inventory management chores. Running Point of Sale requires additional configuration, and any glitch in the application or its configuration can trigger errors like QuickBooks Point of Sale invalid product number. Here is a list of all those reasons why you can get error code 176109 in QB Point of Sale.

  1. QuickBooks Point of Sale Entitlement Folder is corrupt or damaged.
  2. The product code used to install Point of Sale is not correct.
  3. The user does not have administrative rights on the computer.


  1. Before troubleshooting an invalid product number in QuickBooks Point of Sale, make sure to take a backup of your company data file.
  2. Check QuickBooks POS for updates, as you will need the latest version of Point of sale to resolve the issue.
  3. You need to delete the entitlement folder from Windows that is hidden, so change the windows settings to show hidden files.                            

Show Hidden Files in Windows 7 and Windows Vista:

  1. Click the Windows Start button and select My Computer.
  2. Under the Organize tab, select Folder and Search Options.
  3. Under the View tab, click Show Hidden Files and Folders.
  4. Now unmark Hide Protected System Operating Files and click Yes.
  5. Click Apply and then click OK.                                                                          

Display Hidden Files in Windows 8 and 8.1:

  1. Open Windows Explorer by pressing Windows + E on the keyboard.
  2. Select the File Extension under the View tab and click Hidden Items.                

Display Hidden Files in Windows 10:

  1. Click the Folder icon at the bottom of the screen in the System Tray.
  2. Click, Hidden Items under the View tab.

Troubleshooting Steps to Rectify Invalid Product Code or Invalid Product Number Error:

Try deleting all the Items inside Entitlement Folder

The files inside the Entitlement Client folder get damaged and can trigger several running QuickBooks and POS. Once you get rid of these files, QuickBooks will recreate them on startup, thereby becoming an essential QuickBooks invalid product number fix.

  1. Navigate to C:\ Program Data \Intuit\ Entitlement Client\ v8 and press Control + A to select all the files inside the folder.
  2. Press the Delete Key, and for confirmation, click Yes.
  3. Now open the QuickBooks POS and try registering the application again. If you still encounter QBPOS invalid product number, jump to the next resolution.

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Try Renaming WS Activity File

Damage in the WS Activity file is also why you can get QuickBooks product number list errors while running QuickBooks Desktop POS. Once you rename the file, QuickBooks will not recognize it and will create a new one for its operations.

  1. Navigate to C: \Program Data\ Intuit\ QuickBooks Point of Sale\ Ini folder.
  2. Right-click the WSActivity file and rename it to OLDWSActivity.
  3. Exit this window and delete the Entitlement folder once again.
  4. Now open QuickBooks POS and check for the invalid product code error.

Try Reinstalling QuickBooks Desktop POS

Reinstalling QuickBooks Desktop is the last resort to get rid of error 176109 incorrect product number QuickBooks. Follow the instructions below and quickly get a fresh copy of QuickBooks installed on your system for a permanent fix of the error.

  1. Click the Windows Start button and select Control Panel.
  2. Under Control Panel, go to Programs and Features and select Uninstall a Program.
  3. Double click QuickBooks POS from the list and select Uninstall/Change.
  4. Click Uninstall, and wait for the uninstallation process to complete.

Further, copy the POS data folder to the desktop and modify its name by adding .OLD in the end. It will prevent QuickBooks POS from recognizing the folder and lead to it creating a new one. Now, you need to undertake the following steps to delete the QBPOSDBSrvUSER Windows user and rectify QuickBooks POS invalid product number Windows 10:

  1. Go to the Control Panel from the Start menu and browse to User Accounts.
  2. Next, choose to Manage another account and hit Continue in the user account window.
  3. Navigate the list and click on QBPOSDBSrvUSER and choose to Delete the account.
  4. Confirm to delete the folder and reboot the system to apply the adjustments to manage the QuickBooks change product number issue.

Later, proceed with the reinstallation of QuickBooks Desktop POS. If you have a QB Setup file on a CD, then insert it into your computer, click the Setup file to install QB POS, or download it from Intuit’s® website and follow the on-screen instructions for a fresh installation. Now verify the presence of the QuickBooks product number not working.

Hopefully, this troubleshooting method will help you resolve QuickBooks Error 176109, but if you need the help of an expert to perform this troubleshooting for you, don’t hesitate and call Our Point of Sale Number +1- 855 738 2784 now and get connected with certified experts.


How to restore company files after reinstalling QB Desktop POS to fix the invalid product number error?

You can restore the company file as follows:

  1. Open the QuickBooks POS application and create a new company file.
  2. Now, restore the backup you created earlier (Important to do before beginning to troubleshoot)
  3. Open the QB POS app to see if the invalid product number QuickBooks error has gone.
  4. Register your QB POS again.

Is the QB utility helpful in fixing the invalid product number error?

Yes, you can download the QuickBooks tool to protect your files. Simply download and install it by following the instructions. Next, run the file and start scanning to diagnose and resolve errors. Reboot the system and check for bugs like invalid product numbers.

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Effective Ways to Rectify QuickBooks Invalid Product Number
Article Name
Effective Ways to Rectify QuickBooks Invalid Product Number
One of the most common errors QuickBooks POS users encounter while utilizing QB Point of Sale is QuickBooks Invalid Product Number.
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Accounting Helpline
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