- Check if Windows Defender feature Ransomware protection is enabled. If so, configure it to add Quicken as an "allowed app" without turning off Ransomware protection:https://community.quicken.com/discussion/7857675/faq-windows-defender-controlled-folder-access
- Are you getting "Oops, something went wrong"? Have you recently enabled a VPN? If so, this might be the problem. Try turning the VPN off and see if that helps.
- Please verify these settings:Go into Control Panel / Internet Options or Start Internet Explorer. Click on Tools / Internet options.Click the Advanced tab. Ensure that all "Use TLS 1.0, 1.1, 1.2" have checkmarks. Uncheck all "Use SSL x.x" Click the Contents tab and click the "Clear SSL state" button. Click Apply, then OK. Close IE. Close and restart Quicken and see what happens.