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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Adobe Community Professional ,
Nov 06, 2019 Nov 06, 2019

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Try resetting the preferences of After Effects CC 2019 as follow - 

  1. Press Command+Option+Shift (Mac OS) while the application is starting > 
  2. A dialog box launches asking you if you want to delete your preferences file. Click OK.
Vishu Aggarwal
Adobe Certified Instructor, Professional and Expert

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New Here ,
Nov 06, 2019 Nov 06, 2019

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Thanks for the response,

I did it, and it continued to hang. Media Encoder works fine - It does take a while to open but after that its smooth.

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Contributor ,
Jan 21, 2020 Jan 21, 2020

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I'm having the same thing. All I get is the splash screen up to "Initializing MediaCore"... then it hangs for a couple minutes. And then just dissapears. No error message, no program running... just goes away.

I maunually removed all AF prefrences and have only two Apple Quicktime plugins (AppleIntermediateCodec.component & AppleMPEG2Codec.component). 

All very mysterious.

 

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New Here ,
Feb 06, 2020 Feb 06, 2020

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Did you solve your problem? im having the exact same issue right now tried everything i can do been searching a solution all day yesterday please let me know how you solved

 

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Community Beginner ,
Apr 07, 2020 Apr 07, 2020

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i renamed my (media core plug-ins) and it ran normally. I had AE 2020 and 2019 also installed, after doing this to the same folder in each ap, it ran fine. Don't yet know what is offending the running...one file or multiple in there

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Adobe Employee ,
Apr 08, 2020 Apr 08, 2020

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Hi all,

 

Thanks for reaching out. Third-party plug-ins, which are installed in the MediaCore folder can cause After Effects to stuck at "Initializing Mediacore" during launch. As suggested by @bwaz, try renaming or removing the plug-ins from the MediaCore folder and see if it brings any change. Location of the folder:

 

macOS - HD > Library > Application Support > Adobe > Common > Plugins > 7.0 > Media Core

Windows - C:\Program Files\Adobe\Common\Plug-ins\7.0\MediaCore

Let us know if it helps.

 

Thanks,

Nishu

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Community Beginner ,
Apr 08, 2020 Apr 08, 2020

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I found that its the Common folder that is causing the problem. Adobe After Effects 2020/Support Files/(Media Core plug-ins)/Common   If I rename that, AE launches. I tried moving bunches of files out of that folder to try and isolate the problem file, but was unable to pin point it. Only by renaming the Common folder would it launch. Is there an issue in that folder or location of items of that folder?   

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Contributor ,
Apr 08, 2020 Apr 08, 2020

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Can you clarify that path, please? I do not have a folder "support files" in my After Effects (applications) folder. Is that in a library somewhere?

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New Here ,
Apr 08, 2020 Apr 08, 2020

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So im deleting my info and interest in the apps im just not smart enough
with computer sorry i bothered yoy

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Community Beginner ,
Jan 03, 2021 Jan 03, 2021

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Thank you so much, it worked for me!

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Contributor ,
Apr 08, 2020 Apr 08, 2020

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I renamed and also removed that. Dosn't seem to make any difference. I still hang on loading Media Core, and then get "quit unexpectadly" a couple minutes later.

Note: I have no plug ins associated with after effects at all. I don't think I've even used the program in about 6 years. Really is my first attempt to launch 2020 version.

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Adobe Employee ,
Apr 13, 2020 Apr 13, 2020

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Hi @nealbridgens,

 

Are you on macOS or Windows? Do you see any crash report? If not, here's how you can find it: https://community.adobe.com/t5/after-effects/faq-how-to-find-after-effects-crash-logs-on-your-comput...

Please share it for further investigation.

 

Thanks,

Nishu

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New Here ,
Sep 01, 2020 Sep 01, 2020

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Hello, I encounter the same problem, the "initializing Mediacore" stage is very long. AE finally opens after a while but it sounds weird. I work on a iMac (Os 10.14.6) I tried to delete Mediacore folder, but the problem remains the same. Have you heard about another solution ? thanks

Martin.

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Adobe Employee ,
Sep 02, 2020 Sep 02, 2020

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Hi Patrick,

 

That's not ideal. Have you tried resetting the preferences of After Effects?

Let us know how it goes.

 

Thanks,
Nishu

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New Here ,
Oct 03, 2021 Oct 03, 2021

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This works for me on Bigsur v11.6. Thanks for saving my a**!

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New Here ,
Jan 25, 2022 Jan 25, 2022

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Спасибо тебе добрый человек!!! Перепробовала всевозможные варианты из интернета и только твой совет помог! Спасибо большое!!!

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Explorer ,
Nov 13, 2020 Nov 13, 2020

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I'm experiencing the same problem, and have tried unsuccessfuly the various fixes suggested on this page

Windows i9 processor; 128G RAM; separate SSD drive for cache

After Effects + Premiere taking over 5 minutes to load

Premiere 2020 controls also so unresponsive, it's literally unusable 

Had several trouble shooting sessions with an Adobe expert online.

As a last resort he suggested reinstalling Windows.

My case file was closed prematurely, before discovering that reinstalling Windows didn't solve the problem.

He hasn't replied to my email about this.

Apart from all that, really happy with Adobe right now...

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Explorer ,
Dec 18, 2020 Dec 18, 2020

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Any updates? The only way I can get After Effects to run it to rename the MediaCore folder

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Community Beginner ,
Dec 18, 2020 Dec 18, 2020

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No, which is amazingly frustrating! Adobe did an update to my Premiere, and when I opened it to finish a taks, it re-loaded the ExportAVI.PRM file and I had to search around to find it, and remove it. ADOBE???

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Explorer ,
Dec 18, 2020 Dec 18, 2020

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Rediculous that we have to go through all this troubleshooting just to use software we're paying for which is supposed to be professional grade software.

 

I have to rename the Medicore folder back to its original name when running Premeire Pro or my plugins won't work.

 

I waste so much time trying to troubleshoot. I'm considering changing platforms, but I've spent so much money and time on this software and associated training.

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Community Beginner ,
Jan 03, 2021 Jan 03, 2021

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So it helped me just renaming to 'Common' Folder in C:\Program Files\Adobe\Adobe After Effects 2020\Support Files\(Media Core plug-ins)

I renamed it to Common1 and AE opened without hesitation!

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Explorer ,
Jan 04, 2021 Jan 04, 2021

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Update: Solved this myself by working out the 5minute load time was due to a conflict with my anti-virus software. I'm using Sophos Endpoint and have to manually override this everytime I open an Adobe programme. Specifically 'peripheral control' seems to be the culprit.

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New Here ,
Nov 15, 2021 Nov 15, 2021

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My solution was also this. The same thing with  Avast in After effects 2022.I disabled it and my problem was solved.

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New Here ,
Feb 01, 2022 Feb 01, 2022

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Hey Thanks! This one worked for me. I excluded all adobe applications from the anti-virus software.

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