Damaged licensing data or firewall that is not properly configured causes Sync license data online error when opening QuickBooks Desktop Point of Sale
Solution 1: Rename the Intuit Entitlement Client folder
Note: The Entitlement Client folder is a hidden folder. You may need to Display hidden files and folders or search for files using Windows before performing the following steps.
- On your keyboard, press Windows+R to open the Run command.
- Copy and paste the path C:\ProgramData\Intuit\Entitlement Client, then press Enter.
- Right-click on the the folder v8, then select Rename.
- Rename the folder to v8(OLD).
Solution 2: Configure Firewall settings
If the issue persists, configure any firewall applications to allow QuickBooks Desktop Point of Sale processes. Refer to Firewall configuration for QuickBooks Point of Sale for details.