Intuit Data Protect not working in Windows can stem from various issues, including outdated software, firewall or antivirus interference, or corrupted installation files. Users often encounter error messages or find that backups fail to initiate or complete. To resolve these issues, ensure your software is up-to-date, adjust firewall settings to allow Intuit Data Protect, and consider reinstalling the program. If problems persist, consulting Intuit's support documentation or contacting their customer service may provide additional solutions. Contact QuickBooks support at 1.855.526.5749 for assistance with persistent issues or to speak with a certified professional.