Camtasia not working

If Camtasia stopped working immediately after upgrading macOS on a 2024 MacBook Pro with an M4 Max, the first thing I would check is Camtasia's version, rather than changing macOS settings or reinstalling macOS.

TechSmith's current Camtasia 2026.2.2 release specifically added support for macOS 27 Golden Gate. 

Therefore, if the Mac was upgraded to macOS 27 and an older Camtasia version is installed, compatibility is a plausible explanation.

I would troubleshoot it in this order:

Check the Camtasia version. Open Finder >> Applications >> Camtasia >> Get Info, or if Camtasia opens, check Camtasia >> About Camtasia. 

If it is older than 2026.2.2, update Camtasia first.

TechSmith Camtasia release notes

If Camtasia will not open at all, restart the Mac and try again. Apple specifically recommends restarting, installing application updates, and, if necessary, reinstalling an application that stops responding or will not open after a macOS update. (Apple Support)

Apple: If an app on your Mac stops responding, closes unexpectedly, or won’t open

Check macOS permissions. A macOS upgrade can affect an application's access to protected locations such as Desktop, Documents, Downloads, and other data. Check System Settings → Privacy & Security and review Camtasia's permissions, particularly if Camtasia opens but cannot record, save, or access media. (Apple Support)

If Camtasia's recorder is the part that stopped working, check Privacy & Security >> Screen & System Audio Recording, and also Camera/Microphone if those functions are involved. Do not  change permissions that are not relevant to the feature that is failing.

If the problem persists with the current Camtasia version, reinstall Camtasia from TechSmith rather than immediately making deeper macOS changes. Apple also recommends reinstalling an application when updating it does not resolve an application problem. (Apple Support)

Because macOS 27 support was specifically added in Camtasia 2026.2.2, I would establish the exact macOS version and exact Camtasia version before proceeding further. That will tell us whether this is primarily a compatibility problem, a permissions problem, or a damaged application/configuration problem.

If you tell me what happens when you launch Camtasia (nothing happens, it crashes, it opens but recording does not work, it freezes, an error appears, etc.) and your Camtasia version