CEPHtmlEngine.exe process causing Illustrator performance issues

Engaged ,
Apr 10, 2017 Apr 10, 2017

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Hi David,

I am happy to report that with the latest update to the Creative Cloud App my problem of perpetual cloud syncs has been fixed. Everything is now working normally. I am truly happy that the engineers addressed the problem and where able to fix it.

As to your question, my problem with Illustrator is that certain background processes (it seems it is CEPHtmlEngine.exe) is loading multiple times in the background causing a CPU overload (loading 20 times or more). The issue has been around now for over a year. It is known to Adobe and a fix has been promised, but I am still having the issue. The issue is so bad, I can only use Illustrator for a short time until it becomes unusable and needs to be terminated. Again, it’s all that cloud stuff which I really don’t need. I need to be able to work locally on my machine and reliably so.

The thread dealing with the issue is here: What is the "Adobe CEP HTML Engine"? It`s using too much from my processor. There are many threads pertaining to just that issue, and obviously it still has not be adressed proberly in any of the many updates. At least any fixes dont work for me...

Should I post the issue in the Illustrator forum?

Thanks to the team for getting my syncing issue fixed!!

Cheers, Walter

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correct answers 1 Correct Answer

Engaged , Apr 10, 2017 Apr 10, 2017
https://forums.adobe.com/message/8908608#access_token=eyJ4NXUiOiJpbXNfbmExLWtleS0xLmNlciIsImFsZyI6IlJTMjU2In0.eyJmZyI6Il… Another forum thread, with the same issue. I have tried all the fixes but to no avail. I will now attempt to delete the CEPHTML Engine Exe file in Illustrator.

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Engaged ,
Apr 10, 2017 Apr 10, 2017

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https://forums.adobe.com/message/8908608#access_token=eyJ4NXUiOiJpbXNfbmExLWtleS0xLmNlciIsImFsZyI6Il...

Another forum thread, with the same issue. I have tried all the fixes but to no avail. I will now attempt to delete the CEPHTML Engine Exe file in Illustrator.

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Engaged ,
Apr 10, 2017 Apr 10, 2017

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Preran (Adobe Staff) said Feb 25 2016 that the issue would be fixed (solutions he mentioned did not work for me). :

Cheers,

Walter

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Engaged ,
Apr 10, 2017 Apr 10, 2017

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I can confirm that deleting CEPHtmlEngine.exe (I just renamed it) in Illustrator fixed the problem for me. Since I renamed the file, I get two error messages on startup but everything else works flawlessly now. Seems CPU load is back to normal. This issue needs to be addressed by Adobe at some point though, its been over a year now since the issue first got pointed out.

I am sure Adobe will get it fixed. If you need logs I will be happy to supply.

Cheers, Walter

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Adobe Employee ,
Apr 11, 2017 Apr 11, 2017

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Hi Walter,

Glad to hear that the syncing issue was fixed. I'm wondering if the high CPU use issue related to CEPHtmlEngine.exe process is something different or new from the thread you referenced. I think in that case there were particular libraries files which were causing the issue. Please see this support article for reference - High CPU usage due to CEPHtmlEngine. I think in that case the issue was affecting several products and was subsequently resolved by an update to the Creative Cloud app.

A few questions for you:

  • What version of Illustrator was this happening with CC2015 or CC2017?
  • Was it affecting other products or just Illustrator?
  • Do you have the latest version of the Creative Cloud app installed (you can check from the preferences)?
  • Did the issue seem to start right after the latest update?
  • What anti-virus software do you use?

I'm not sure if this is an Illustrator specific issue, I suspect not, so am happy to try to work with you on it here in this forum.

Cheers,

- Dave

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Engaged ,
Apr 11, 2017 Apr 11, 2017

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Hi David,

I followed the Support Article that you are refering too and followed it step by step. I deleted the folder library, downloaded the ZIP File, recreated the folder aso. but the issue did not go away. That's why I decided to delete the CEPHtmlEngine.exe file and it solved the problem. With the only setback, that I am now receiving two error messages at the beginning and one error message at the end of my Illustrator sessions.

But I am glad to take that into account, because I can now work without the CPU issues, which was affecting my whole system and made it impossible to work on anything. It took me almost a year to realize that the CPU issue was Illustrator related. I just realised that at times my system was so slow, my keyboard input would lag behind and show considerable latency. It was only much later I realised that it was Illustrator relateed after spending long hours researching the issues. I usually have more than one programm opened, so I did not connect the strings right away..

To answer your questions:

  • The CPU overload issue was there in CC2015 and stayed with the CC2017 update. I always update.
  • No other products seem to be affected, although I am having issues with After Effects that I need to look into (but havent had the time yet).
  • I have Creative Cloud build 4.0.1.188 installed
  • The Illustrator issue was there since I can remember. But a year for sure!
  • I use virus protection that came with Windows 10 (no other virus software).

If you can broker a solution to this problem, I am sure many users will be happy to hear of it. I suspect that many users are working with Illustrator with the CEPHtmlEngine.exe file deleted, as this was posted as a workaround by one user and it does work. Although not optimal in the long run....

Cheers,

Walter

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Adobe Employee ,
Apr 12, 2017 Apr 12, 2017

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Hi Walter,

Thank you for the additional details. I'm glad that you found this workaround. I would be interested in better understanding why this is happening and work with you to find a permanent solution. I think we might need to re-enable the issue temporarily and then collect log files from your system, but I'm not positive. I'm going to reach out to the related engineering department to see what they recommend. I'll follow-up with what I find out and we can go from there.

Cheers,

- Dave

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Engaged ,
Apr 13, 2017 Apr 13, 2017

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Sure we can do that. I can undelete the file, restart Illustrator in the state in which the problems occur and then create the log file.

Let me know,

Walter

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New Here ,
Aug 18, 2017 Aug 18, 2017

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I am getting the same issue with Illustrator (13 instances of CEPHTMLEngine.exe in TM).  If I delete the file for Illustrator the issue goes away but then I get the two error messages that Red Point spoke of.  I need a solution for this!

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Engaged ,
Mar 03, 2019 Mar 03, 2019

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Its been two years and I am still having this issue. I just recently deleted all my creative cloud files and all apps, re-installed them all again. Now I am having the issue again, with multiple instances of the CEPHtmlEngine.exe slowing my Illustrator down to a point where its not workable. Can someone of your engineers please look into this matter and let us know how to fix this once and for all. Also, Adobe needs to address this, since I am not receiving a workable product that I am nevertheless paying for in all these years. Adobe llustrator is an important part of my workflow and I think after two years, its not too much to ask, that this issue is finally resolved. Thank you!

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Engaged ,
Mar 03, 2019 Mar 03, 2019

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Here is a screenshot: 03-03-_2019_18-27-06.jpg

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Engaged ,
Mar 03, 2019 Mar 03, 2019

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The initial procedure to fix this issue does not work, because ALL the links referred to in the support document do not apply to Illustrator 2019.

See: High CPU usage due to CEPHtmlEngine

Please send us an updated procedure which will work in Illustrator 2019.

Thanks, Walter

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New Here ,
Jul 21, 2019 Jul 21, 2019

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J'ai le même problème. Incroyable il n'y a pas fixe sur 2019 ... ce qu'ils font?

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New Here ,
Aug 09, 2019 Aug 09, 2019

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This is still a big issue...

Indesign.. Illustrator.. Photoshop... these are programs i use that all does this.. could someone from the adobe team please adress this..

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Community Beginner ,
Sep 17, 2019 Sep 17, 2019

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Same here. Huge problem. Multiple Adobe CEP HTML Engine processes in multiple Adobe software. Indiesign Illustrator PhotoShop.

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Community Beginner ,
Dec 13, 2019 Dec 13, 2019

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Same issue here. CET Helper.jpg

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