When computers (Server and Workstations) are not in the same QuickBooks Desktop Point of Sale release patch, you receive:

Error: Application Update Required, Intuit.RSG.QBPOSInterop.UpdateApplicationActionPage.

Note: Check for resolution after performing each solution.

Solution 1: Ensure all QuickBooks Desktop Point of Sale updates are installed

Important: If you have QuickBooks Desktop Point of Sale on a server and workstations, make sure to update the server prior to updating the client workstations to prevent further errors.
  1. Click Exit on the update screen.
  2. Choose Help and select Check for Software Updates.
  3. Allow Point of sale to update. If an error occurs during the update, go to the product updates page and do a manual update.

Solution 2: Delete all contents of the Entitlement Client folder and remove WSActivity.xml file

  1. End all QuickBooks Desktop Point of Sale processes.
    1. Press Ctrl+Shitf+Esc to open the Task Manager, then select the Process tab.
    2. End the following processes:
      • qbpos.exe
      • QBPOSDBService.exe
      • QBPOSShell.exe
    3. Close the Task Manager.
  2. End all POS services.
    1. Press Window+R to open the run command.
    2. Enter services.msc, then click OK.
    3. In the Services window, select QBPOS Database Manager vXX.
    4. Select Stop, then close the services window.
  3. Display hidden Windows folder.
  4. Delete the contents of Entitlement Client folder.
    1. Go to the entitlement client folder: C:\ Program Data\Intuit\Entitlement Client\v8.0
    2. On your keyboard, press CTRL+A to select all files in the folder.
    3. Right-click and select Delete.
  5. Delete the WSActivity file.
    1. Go to this location: C:\ Program Data\Intuit\QuickBooks Point of SaleXX.
    2. Open the INI folder, then delete the WSActivity file.
  6. Download and install the updates.
    1. Open QuickBooks Desktop Point of Sale and download and install any updates.
    2. Complete the registration process.