Stuck in loop with logon to Quicken.com? Quicken fails
to start? Quicken won't save changes to lists or transactions? (Windows 10)
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