Follow the instructions in this FAQ: How do I uninstall Quicken for Windows?.If the issue persists, continue to Step 5.
If you do not know how to update these settings, please contact your anti-virus/firewall provider. They will need to be disabled or have the settings updated to include Quicken as a safe program. The anti-virus and/or firewall on your system could be blocking Quicken from running properly. Step 4: Temporarily disable your anti-virus and firewall.
If Quicken doesn't open without a data file, continue to Step 4.