If Quicken won't open, there are several troubleshooting steps you can take to try to resolve the issue. Here are some suggestions:
Restart your computer: Sometimes, a simple restart can resolve software glitches and allow Quicken to open properly.
Check for updates: Make sure that Quicken is up to date. If you're using an outdated version, it may encounter compatibility issues or bugs that prevent it from opening. Check for updates through the Quicken software or the Quicken website.