The QuickBooks Web Connector Has Stopped Working issue can be frustrating, but it’s usually resolvable with some straightforward troubleshooting steps:

1. Restart the Web Connector: Close QuickBooks and the Web Connector. Then, restart both programs. Sometimes, a simple reboot can resolve temporary glitches.

2. Check for Updates: Ensure that both QuickBooks and the Web Connector are up-to-date. Outdated software versions may cause compatibility issues. You can update QuickBooks by going to the Help menu and selecting "Update QuickBooks Desktop." For the Web Connector, visit the Intuit website to download the latest version.

3. Run as Administrator: Right-click on the QuickBooks Web Connector icon and select "Run as Administrator." This ensures that the Web Connector has the necessary permissions to function correctly.

4. Remove and Re-add the Application: If the issue persists, remove the problematic application from the Web Connector. To do this, open the Web Connector, uncheck the box next to the application, and click Remove. Re-add the application by selecting the .qwc file.

5. Repair QuickBooks Installation: If none of the above steps work, the issue might be related to the QuickBooks installation. Use the QuickBooks Install Diagnostic Tool to repair your installation.

6. Check Windows Components: Corrupted Microsoft components like .NET Framework or MSXML can cause issues. Ensure these components are updated or repaired.

If these steps don’t resolve the issue, you may need to consult a QuickBooks expert for more advanced troubleshooting.