Quicktime will not open

Sorry, but you have misread my query. Quicktime does NOT freeze and NOR does it 'close without any explanation' OR 'quit unexpectedly'.

It does not open.

I expect an app to open when it is clicked. My Quicktime does not. Ever.

As I say, I do not remember ever using it before, so I do not know what to expect when I click on it, but it does nothing.

This is puzzling me....

Thank you, c_luc9, for your reply. I finally set aside some time to try and seriously tackle my QuickTime problem, which meant I first finished what I was doing and closed all apps from my screen...

I tested if QuickTime would open, and - apparently - it did not (as I mentioned, I have never used it before, so I did not know what to expect when I clicked on it). I clicked on QuickTime and nothing appears to open...

My first thoughts - before trying Safe Mode - was to see if the Console produced any interesting messages when QuickTime was clicked. No sooner had I thought that, when I noticed - for the first time - that QuickTime had, in fact, appeared in the (app) menu bar!

So QuickTime had 'started', but it had not yet 'opened' any window - as I was expecting. It 'opens' a window only from the app menu bar!

So, it was my mistake, but the How to use QuickTime Player support page gave no indication of this.

Thanks for helping. There was no problem. It was my lack of experience in using QuickTime:-)

Happy lockdown:-}