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

New Here ,
Nov 06, 2019 Nov 06, 2019

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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. 🙂

 

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Error or problem , Freeze or hang

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New Here ,
Dec 24, 2020 Dec 24, 2020

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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!

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Community Beginner ,
Jan 03, 2021 Jan 03, 2021

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Didn't work for me 😞

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New Here ,
Apr 28, 2021 Apr 28, 2021

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Install: Resolume Alley!

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New Here ,
Jun 19, 2021 Jun 19, 2021

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

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New Here ,
Jun 19, 2021 Jun 19, 2021

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Install: Resolume Alley!

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New Here ,
Apr 21, 2022 Apr 21, 2022

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LATEST

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

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