If QuickBooks Web Connector isn't opening, you can try several steps to resolve the issue:

1. Check for Updates: Ensure that both QuickBooks and the Web Connector are up-to-date. Outdated software can cause compatibility issues. Update QuickBooks to the latest version and download the latest Web Connector version from the Intuit website.

2. Verify System Requirements: Confirm that your system meets the minimum requirements for Web Connector. Incompatible operating systems or insufficient hardware can prevent it from launching.

3. Run as Administrator: Right-click on the Web Connector shortcut and select “Run as administrator.” This can help if the issue is related to user permissions.

4. Check for Conflicts: Other applications or services may conflict with the Web Connector. Temporarily disable antivirus or firewall software to see if they are causing the issue. If the Web Connector opens, configure your security software to allow QuickBooks Web Connector.

5. Repair Installation: Reinstall the Web Connector. Go to the Control Panel, uninstall the Web Connector, then reinstall it. Ensure that you download the installer from the official QuickBooks website to avoid corrupt files.

6. Check Windows Event Viewer: Look for error messages in the Windows Event Viewer. These messages can provide clues about what might be preventing the Web Connector from opening.

7. Review Log Files: Check the Web Connector log files located in the C:\ProgramData\Intuit\QuickBooks Web Connector\ directory. Look for any errors or issues that might need addressing.

If these steps don’t resolve the issue, consider contacting QuickBooks support for further assistance.