Users only discover an application can't be captured after starting the full recording flow (selecting resolution, blur regions, etc.) and watching it fail seconds in. There's no way to know beforehand.

Suggested Enhancement: When a user selects a window/application as the capture target, run a lightweight check and warn proactively if it appears to be a protected/secured window, before the user invests time in setup.

Customer Benefit: Saves setup time and avoids the frustrating "fails right when I click Start" experience.