QuickBooks error 176109 occurs when you try to open or work in QuickBooks. We understand that it is frustrating to deal with; hence, we are here with this blog to guide you in fixing it.

When QB error 176109 occurs, you will receive an error message from QuickBooks stating, “Error code 176109: Invalid Product Code or Invalid Product Number.”. Due to its appearance, you won’t be able to work on QuickBooks at all. It is creating a problematic scenario for you, so resolve the same on priority. Read the blog if you are wondering about ways to fix QuickBooks error 176109.

We recommend that you always resolve QuickBooks error 176109 under the guidance of experts with enough knowledge to deal with it. If you are looking forward to getting help from experts, then it is suggested that you contact our team at +18557380359 to get rid of errors in an instant.

What Are the Factors That Impact QuickBooks Desktop Error 176190

Knowing the issue that is causing the occurrence of the error is an essential step. One, it gives you an insight into the reason for the error; two, it keeps you ahead of it in the future.

  • Your QuickBooks installation is not done properly, or the files are corrupted. It is triggering a prominent factor, causing QuickBooks to throw error 176190.
  • Other corrupted files in QuickBooks with corrupted data must also be addressed.

Troubleshooting Methods to Resolve Error Code 176190

Back up your company file before fixing the issues, and keep your QuickBooks license number and product number ready. You can continue to use the methods mentioned until the error is resolved:

Troubleshooting Method 1: Delete the Content of the Entitlement Client Folder

We will delete the file using the ‘Clear entitlement file tool’ in this method.

  • First, download a clear entitlement file tool.
  • Next, unzip the files and save them on the desktop; double-click on the file to open it.

Finally, reopen QuickBooks Point of Sale and complete the registration process. You can choose to delete the clear_entitlement_v8.bat file and the clear_entitlement_v8.zip file. 

The following blogs can help you: QuickBooks Error Code 31600: Possible Causes and Solutions

Troubleshooting Method 2: Perform a Clean Install of QuickBooks

A clean install will help rectify issues with QuickBooks installation file corruption.

  • Press the Win and R keys together to reach the run command.
  • Now type Control Panel and hit the enter key on the keyboard.
  • Next, click Program and Features.
  • Then, you have to choose to uninstall a program.
  • Among the applications, choose the QuickBooks point of sale.
  • Now, choose to uninstall it.
  • You need to comply with the onscreen instructions to finish uninstalling.  

After uninstallation of the program, delete the QBPOSDBsrvUser and rename the uninstalled QB Point of Sale files by adding ‘old’ at the end. Now reinstall the program using the instructions below: 

  • Open the installation files and install the program by following the onscreen instructions.
  • After the installation, use the product and license numbers to activate QB.
  • After the previous step is done, reboot your PC and open QuickBooks again.

Read more: Fix QuickBooks Error H505 When Switching to Multi-User Mode


All the methods provided above are expert-approved; hence, you need not worry when you will use them. These are the best and quickest ways to resolve error 176190. If you have issues with the troubleshooting process, call us at +18557380359 to discuss any query or doubt. We can even help you fix the QuickBooks error 176109 within minutes, saving you time and effort.