It seems like you are having trouble with Foxit PDF viewer and the preview handler. The preview handler is a feature that allows you to preview PDF files in File Explorer without opening them in a separate application. To troubleshoot this issue, here are a few steps you can try: 1. Verify File Association: - Make sure that Foxit PDF viewer is set as the default program to open PDF files. You can do this by going to Settings > Apps > Default apps and selecting Foxit as the default app for PDFs. 2. Reinstall Foxit PDF Viewer: - Sometimes, reinstalling the PDF viewer can resolve any compatibility issues. Try uninstalling Foxit PDF viewer, restarting your computer, and then reinstalling it. 3. Check for Updates: - Ensure...