After Effects 2020 stuck at "Initializing Mediacore" at launch, macOS

[tejasm89104020]

Hi,

I was opening After Effects CC2020 for the first time, and it won't open because it hangs/gets stuck on 'Initializing Mediacore." I've uninstalled and reinstalled, as well as restarted multiple times. I have a Macbook Pro, and any help is appreciated. 🙂

Title edited by Mod.

[leeblair]

Hey guys - this too has boggled my mind for years... but for me (Windows 10), I had to go to

Adobe After Effects 2020/Support Files/(Media Core plug-ins)/Common

and rename the ExporterAVI.prm to ExporterAVI.old and then it would launch without issue!

[Criizon5E39]

Didn't work for me 😞

[Fabio5E62]

Install: Resolume Alley!

[defaulttq99olh7t308]

Hi, when installing plug-ins I can't start After Effects because it gets stuck in Initialize MediaCore. Any solution?

[Fabio5E62]

Install: Resolume Alley!

[ANIMMOSI]

Hi, from 2022.. i was fixed this issue with simple solution, just ignore recent update and back to your previous version. it's work..

In case, i was installed after effect 2022 version 22.3 and it was stucked in Initializing Mediacore, all of way from this discussion is not working for me, then i just initiate to downgrade to previous version ; 22.2 and it back normaly. Also, don't forget to downgrade media encoder with same version. it work too for premiere.. Good luck