I just got an email from the in-laws that Quicken 2013 is misbehaving under MSWindows 11. I haven't had a chance to look at their system and see just what it's doing or not doing, so I'm looking around if there's been reports of problems.
(and no, before anyone here even says it, they will not be moving to one of the newer versions. They will not accept a "subscription" model for software, and neither would I). I can't validate this for myself as I'm running Quicken 2013 under Crossover Office.