What is the "Adobe CEP HTML Engine"? It`s using too much from my processor.

Just updated today to 2015.2 7884 Build which seems to have sorted the high CPU use of the "Adobe CEP HTML Engine".

(Tested with Illustrator, Photoshop, Illustrator so far).

I have just come across this issue myself. I am using the latest version of Adobe Photoshop (2015.1.2/20160113.r.355 x64), which I installed 2 weeks ago. I noticed a considerable amount of CPU usage on my laptop while running the program. At first, I checked out the Task Manager, and noticed several processes called "Adobe CEP HTML Engine (32 bit)", one of which was using about 35% CPU usage. I ended the task, and saw the Libraries tab in Photoshop briefly disappear and then re-appear. However, the process came back, and continued to consume the same amount of CPU usage.

Upon reading a link with possible solutions as mentioned by Preran before, the problem appears to have resolved itself once I created 2 new folders under C:\Users\username\AppData\Local\Adobe; one with the name "Creative Cloud Libraries", the other in the new folder "Creative Cloud Libraries" called "Logs". Immediately after I had done that, a log file by the name of "CC Panel Library PHXS 16.1.2.log" appeared in the Logs folder, and the CPU usage on the process dropped down to 0%.

The log file has the following inside:

Sat Mar 19 2016 12:10:45 GMT+1030 (Cen. Australia Daylight Time) {"errno":-4058,"code":"ENOENT","syscall":"open","path":"C:\\Users\\username\\AppData\\Local\\Adobe\\Creative Cloud Libraries\\Logs\\CC Library Panel PHXS 16.1.2.log"}

Has this been fixed with the latest updated (17.03.2016)? If not do I have to run the fix again (High CPU usage due to CEPHtmlEngine) after the update?

I would be if this was FIXED before 2017?.........

+1 for annoying PS CC 2014 errors (yes, I rolled back to see whether it was unique to PS 2015... seems it's not.)

Fix plez?

Any update on this Adobe?

We're also struggling with this on our Win 7 PC's ... you've released numerous updates since this thread started but still not fixed this issue!

So we are forced to pay for a subscription model which can be updated at any time and yet the fix is to update ourselves? Testing Adobe.... testing

Here is a solution for win users (maybe have to repeat if the problem comes back) (thanks to Manish)

End all Adobe processes including Creative Cloud (all sub processes), Core Sync, CCLibrary, Adobe Desktop services, Adobe UpdateNotifier, Adobe IPCBroker processes from task manager.

When its done (be sure, no other adobe process left i didnt mentioned, like acrobat updater, AGS etc)

Go to

c:\Users\<user_name>\AppData\Local\Adobe\OOBE\
(or type %LocalAppdata% in run window (Win btn+R))

************** DELETE Opm.db ******************

should work, have fun with your "liberated" CPU time

here, all the CEP HTML processes using 0,1-0,2% now (better than 9-10%), but yeah, still here.. and they are watching me... wáááááááááááá...

I DO NOT understand why this isn't fixed yet? My company has been using Adobe software, primarily Photoshop, Indesign and Illustrator for years. Over 10 years to be exact. Now whenever I or any of my colleagues open an Adobe program I or they get a bunch of "Adobe CEP HTML Engine" processes in task manager. This has been tested with WIN7,8 and 10. With Photoshop the "Adobe CEP HTML Engine" takes a constant 30% of CPU. All the time. With Illustrator you get about 5 instances of "Adobe CEP HTML Engine" drawing CPU and memory.

There are a few workarounds. For Photoshop: disabling "Allow extensions to connect to the internet" and "start screen" from preferences cures the 30% CPU draw. For Illustrator I have yet to find a workaround that is good. Disabling the "start screen" in Illustrator helps, but still I'm left with a few "Adobe CEP HTML Engine" processes running.

Disabling "libraries" also helps, but does not fix the problem. I understand that for example libraries need the Adobe CEP HTML Engine to work, but the CPU and memory consumption is just too much.

BTW: disabling sync in Adobe Creative Cloud DOES NOT fix this. It helps a little bit, but is not a fix.

My question is: Why has this not been fixed yet? I'm sure _ALOT_ of people are suffering from this on a daily basis.

Dear All,

Could you please refer to this post and see whether it fixes your problem?

CEPHtmlEngine slows Computer (Mac) and solution.

If I untick "Show 'Start' Workspace When No Documents Are Open" in Preferences for Photoshop and Illustrator, the Adobe CEP HTML Engine stops using up CPU. But there's no option in Dreamweaver or Premiere so I'm stuck.

Edit: Closing the Libraries tab didn't work for me as others did.