After effects initializing mediacore зависает

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  • After Effects 2020 stuck at "Initializing Mediacor.
After Effects 2020 stuck at "Initializing Mediacore" at launch, macOS /t5/after-effects-discussions/after-effects-2020-stuck-at-quot-initializing-mediacore-quot-at-launch-macos/td-p/10718377 Nov 06, 2019 Nov 06, 2019

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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.

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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
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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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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.

All very mysterious.

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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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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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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.

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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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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?

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

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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 Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

Thank you so much, it worked for me!

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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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Please share it for further investigation.

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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

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Let us know how it goes.

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

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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.

Welcome to the Community!

We have a brand new look! Take a tour with us and explore the latest updates on Adobe Support Community.

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Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
  • Home
  • After Effects
  • Discussions
  • After Effects 2020 stuck at "Initializing Mediacor.
After Effects 2020 stuck at "Initializing Mediacore" at launch, macOS /t5/after-effects-discussions/after-effects-2020-stuck-at-quot-initializing-mediacore-quot-at-launch-macos/td-p/10718377 Nov 06, 2019 Nov 06, 2019

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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.

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

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 Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

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.

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

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.

All very mysterious.

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

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

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

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

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

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.

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

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?

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

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?

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

So im deleting my info and interest in the apps im just not smart enough
with computer sorry i bothered yoy Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

Thank you so much, it worked for me!

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

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.

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

Please share it for further investigation.

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

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

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

Let us know how it goes.

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

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

Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Copy link to clipboard

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.

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