Here's How to Fix QuickBooks Invalid Product Number Error QuickBooks Invalid Product Number The QuickBooks invalid product error typically occurs when the software fails to recognize or authenticate the product number during activation or registration. This issue may arise due to various factors, such as damaged installation files, corrupted components, incorrect entries, or issues with the entitlement files. When faced with this error, users encounter difficulties registering or activating their QuickBooks software, impacting its functionality and usability. Resolving these issues may involve repairing the Entitlement Folder or ensuring the accurate use of the product code during the Point of Sale installation to rectify the QuickBooks Invalid Product Number error. In this guide, we shall highlight the probable explanations of QuickBooks invalid product number error. Alongside, we will provide you with expert advice on how to eradicate this issue permanently. Nonetheless, if you have any further queries, you can get in touch with us on our Toll-Free Number 1855-738-2784. Factors Contributing To QuickBooks Point Of Sale Error Errors such as QuickBooks Point of Sale (POS) Error and invalid product number can stem from additional configuration needs when running the POS system. Glitches within the application or its setup can trigger error in QuickBooks. 1.One probable cause could be a corrupted or damaged Entitlement Folder within QuickBooks Point of Sale. 2.Additionally, the utilization of an incorrect product code during the installation process might also contribute to this issue. Troubleshooting QuickBooks Product Number Error Addressing QuickBooks Product Number error promptly is crucial to ensure smooth functionality and uninterrupted usage of QuickBooks, enabling users to manage their financial data efficiently and accurately. Here are the top two best solutions to deal with the error. Solution 1: Register QuickBooks POS Again To resolve QuickBooks and POS issues caused by damaged files within the Entitlement Client folder, access C:\ProgramData\Intuit\Entitlement Client\v8. 1.Select all files using Control + A, delete them by pressing Delete, and confirm with "Yes." 2.Upon QuickBooks startup, the software will regenerate these files, acting as a vital solution to fix an invalid QuickBooks product number. 3.Afterward, attempt to register QuickBooks POS again. 4.If the QB POS invalid product number issue persists, proceed to the next troubleshooting step. Solution 2: Changing the WS Activity File Name Attempt to resolve QuickBooks Desktop POS errors related to product numbers by renaming the WS Activity file, which might be damaged. Here are the steps to guide you throughout. 1.Access the C:\ProgramData\Intuit\QuickBooks Point of Sale\Ini folder, right-click the WSActivity file, and rename it as OLDWSActivity. 2.Subsequently, delete the Entitlement folder once more. 3.Launch QuickBooks POS to verify if the issue with the invalid product code persists after these changes. Conclusion After performing the above methods to resolve QuickBooks invalid product number, initiate the reinstallation of QuickBooks Desktop POS. Alternatively, download it from Intuit’s website and follow the provided on-screen instructions for a new installation. Verify the existence of the QuickBooks product number functionality. If you require expert assistance with these troubleshooting steps, feel free to contact us on our Toll-Free Number 1-855-738-2784 for quick resolution.