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Hi all,
Mojave was running well and everything was great when suddenly Quicktime stopped playing mp4. Safari also stops playing in Internet classes (which also contains mp4).
Does someone knows what should be done?
Thanks and best regards,
Leopoldo Knett
I would suggest to use these methods to see where the real issue is:
I would suggest to use these methods to see where the real issue is:
Hi Urquhart,
Thanks for your response.
Good hint. However, the problem also exists in safe mode.
I also created a new account to be able to test with another user and the problem also happens on the new account.
Any other suggestions?
If you have any audio device (in input or output), try to unplug it. Try with the normal speaker of your mac and unplug mics, etc...
Mojave 10.14.06 / Quicktime does not play mp4 / unknown error -101
