Straming to Chromecast: insecure site error

[NightwatchNL]

When streaming en movie to my Chromecast, i get the following error:

Insecure site
You attempted to reach e7481bf1-42b2-2ae9-17e6-0504e42ebff8.local.. However the security certificate presented by the server is unknown and could not be authenticated by any trusted Certification Authority. This problem may be caused by a configuration error or an attempt to breach your security or your privacy.

If in doubt, abort now.

I then can choose to abort or to temporarely accept the certificate. When choosing the latter, only the message reappears.
What can this be?

[fkuehne]

Where do you get this error message?

[NightwatchNL]

In VLC:

I play a movie ( a .mkv for example)
Then I hit 'Playback -> Renderer -> Chromecast
Now the message immediately appears:



This was never an issue, but it keeps appearing after I reset the prefs earlier.

[ePirat]

Which version of VLC are you using?