The Common Extensibility Platform (CEP) suite couldn't be loaded.

New Here ,
Jan 10, 2016

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Does anyone know how to resolve this? I uninstalled and reinstalled and getting the same error. After Effects can’t continue: The Common Extensibility Platform (CEP) suite couldn't be loaded. You may need to reinstall. After Effects can’t continue: unexpected failure during application startup. I'm running (Mac) Yosemite 10.10.5, using After Effects CC 2015 v.13.6.1. Any help is appreciated!

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1 Correct Answer

New Here , Feb 09, 2016
OChrisJonesO New Here , Feb 09, 2016
I was experiencing the exact same issues you described. No amount of uninstall, reinstall, update, or even the CC cleaner tool was able to fix.The solution? For me, after ensuring that AE was running with full administrator rights in Windows 10 (right click > run as administrator) it opens up just fine for me.

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New Here ,
Jan 26, 2016

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Same problem here after installing latest update for AE CC 2015 on a Windows 10 PC.  Uninstall/reinstall has not resolved the issue.

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Adobe Community Professional ,
Jan 27, 2016

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Uninstall, run the CC Cleaner tool from Adobe, restart your machine, reinstall. See if that helps.

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New Here ,
Jan 27, 2016

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Before running the CC Cleaner Tool (below are the options the tool offers on my machine) do I have to uninstall all of my CC Cloud Apps?  The only App I am having the CEP problem with is CC After Effects 2015 and I don't want to uninstall/reinstall all of my Apps unless I have no other option.

Choose from one of the following options to clean up :
1.  All
2.  Adobe Flash Player 10.2
3.  Creative Cloud 2015, Creative Cloud 2014, Creative Cloud & CS6 Products
4.  Creative Cloud 2015 only
5.  Creative Cloud 2014 only
6.  Creative Cloud only
7.  CS 6 only
8.  CS5-CS5.5-CS6
9.  CS5-CS5.5
10. CS3, CS4
11. Adobe Id credentials
12. Fix Host File
13. Quit

Choice 😆

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New Here ,
Feb 09, 2016

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I was experiencing the exact same issues you described. No amount of uninstall, reinstall, update, or even the CC cleaner tool was able to fix.

The solution? For me, after ensuring that AE was running with full administrator rights in Windows 10 (right click > run as administrator) it opens up just fine for me.

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New Here ,
Mar 13, 2016

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Thanks That fixed it

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New Here ,
Jul 06, 2016

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@OChrisJonesO:
This unfortunately does NOT work in OSX. Same issue here since a few days. Yesterday, when starting AE with Command-Option-Shift keys pressed, I was able to work with it again, but this morning after boot-up: dead, same issue. Any help is much appreciated!

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Adobe Community Professional ,
Jul 06, 2016

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thebeltrdam wrote:

Yesterday, when starting AE with Command-Option-Shift keys pressed, I was able to work with it again, but this morning after boot-up: dead, same issue. Any help is much appreciated!

What, exact, version of AE are you trying to use? (Full version number down to the last decimal, please.)

What happens if you try to use a different version?

What, exact, version of MacOS are you using?

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New Here ,
Jul 14, 2016

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Unfortunately, because AE wont startup, I can only give you AE CC 2015.3 version number 13.8

I am not willing to switch to an older version, because this one worked until recently.

OSX 10.11.5 with NVIDIA GeForce GTX 780 3072MB and 28 GB 800 MHz DDR2 FB-DIMM RAM.

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Adobe Community Professional ,
Jul 14, 2016

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Try checking into the solutions on this page.

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Community Beginner ,
Sep 22, 2018

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Thanks a lot! This works.

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New Here ,
Jun 10, 2016

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Hey PAK, i'm having the same problem. Did you ever resolve the issue?

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New Here ,
Jul 15, 2017

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Has anyone figured out how to fix it for the mac version? I'm struggling with this too. I've tried reinstalling and restarting but none of that works.Screen Shot 2017-07-15 at 7.23.12 PM.png

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New Here ,
Feb 20, 2018

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I had the same problem on a mac running After Effects CC 15.0.1.

Screen Shot 2018-02-20 at 2.54.35 PM.png

The issue turned out to be faulty permissions on the "Adobe" folder inside the user "Documents" folder.  I changed the folder permissions to be "Read & Write" for all (be sure to "apply to enclosed items") and the problem was fixed.  Permissions should be as follows:

Screen Shot 2018-02-20 at 3.46.23 PM.png

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New Here ,
Aug 21, 2018

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I can't find the sharing and permissions file

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New Here ,
Sep 09, 2018

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     MUCHIIIIIIIIIIIISIMAS GRACIAS POR TU APORTE

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New Here ,
Nov 30, 2020

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This worked for me when I was getting the CEP message. Thanks! 

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New Here ,
Dec 16, 2020

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Holy Crap! This fixed it for me and AE 2020. I can't believe this was the issue!!!

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New Here ,
Mar 03, 2021

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Worked for me too, Thanks.

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New Here ,
Dec 26, 2017

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I have tried all of these solutions and still am unable to run AE.

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New Here ,
Jan 19, 2018

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I need the answer to this issue too!!

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New Here ,
Jan 19, 2018

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It turns out that my issue was a network setting. The adobe folder in my documents folder could not be written to when I was offsite. This can happen if you are having your drive backed up online. If you are having the same issue as me you need to check the Always available offline option after right clicking your documents folder.

offline-1.png

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New Here ,
Jan 19, 2018

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Thanks for the quick response...

I'm on a Mac, but i still tried the fix...but don't see that option.

I'll keep searching.

thanks again

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New Here ,
Feb 23, 2018

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This was it!!!

I can't believe how many things  i tried that were all wrong and much more involved. Then this super simple thing was it.

Thank you PAK1111!

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New Here ,
Apr 23, 2020

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What exactly was it that solved your problem? Struggling with the same:/

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