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What is Coresync?

Modern-day programs use a bunch of background services to give users the unique and seamless user experience they’ve come to expect. However, sometimes these background services can cause problems, including performance issues.

In this article, we’re looking at Coresync, what it is, what it does and everything else you need to know about the process.

Also read: How to fix ‘Exec user process caused: Exec format error’?


What is Coresync?

Coresync is a part of the Creative Cloud desktop app from Adobe and is responsible for syncing data between your machine and the Creative Cloud. In addition to syncing all files in the Creative Cloud Files folder on your computer with Adobe servers, Coresync also syncs cloud documents created in different Adobe programs like Photoshop, Illustrator and XD, among others.


Why is Coresync causing high CPU usage?

Adobe says that Coresync shouldn’t be causing high CPU usage at all. This means that in case you’re seeing high CPU usage from Coresync, it can indicate that your installation of Coresync isn’t genuine. 

Threat actors have been known to disguise viruses and malware as legitimate apps before deploying them in the field to avoid detection. If that’s the case with your Coresync installation, you should remove it from your computer as soon as possible. 

How to check if Coresync is genuine?

Follow these steps to check if your installation of Coresync is genuine. 

Step 1: Open Task Manager and head over to the Details tab. 

What is Coresync? How to fix high CPU usage?

Step 2: In the Details tab, right-click Coresync followed by Open file location. 

What is Coresync? How to fix high CPU usage?

Step 3: Check the location of the folder. The legitimate Coresync is installed in the following directory.

 C:\Program Files (x86)\Adobe\Adobe Sync\CoreSync
What is Coresync? How to fix high CPU usage?

If your installation of Coresync is in another folder, you should immediately stop all running Adobe services and delete the malicious folder. 


Removing Coresync on Windows

If you’ve determined that the version of Coresync running on your machine is malware or a virus, follow these steps to remove it from your computer. 

Step 1: Open Task Manager and head over to the Details tab. 

What is Coresync? How to fix high CPU usage?

Step 2: Right-click Creative Cloud.exe and select End task.

What is Coresync? How to fix high CPU usage?

Step 3: Repeat step 2 with other Adobe programs. Be sure to follow this order:

  • Creative Cloud.exe
  • Adobe Desktop Service.exe
  • Adobe CEF Helper.exe
  • Adobe Installer.exe
  • AdobeUpdateService.exe
  • CCLibrary.exe
  • CCXProcess.exe
  • CoreSync.exe
  • AdobeIPCBroker.exe
  • AdobeNotificationClient.exe
  • Creative Cloud Helper.exe

Step 4: Once you’re done closing all Adobe programs, head over to the malicious Coresync’s installation directory and remove the entire folder.

Now restart your computer, launch the Creative Cloud desktop app again, and let it update. Your issue with Coresync using too much CPU should be fixed now. 


Coresync using too much CPU on Mac

Just like on Windows, if Coresync uses too much CPU on your Mac, it could well be an indicator of your version of Coresync being a virus or malware. Fixing this is the same is on Windows as well. All you have to do is close all open Adobe applications and remove Coresync from your machine. 

Once you’re done, restart your Mac and rerun the Creative Cloud desktop app to fix the problem.

Also read: What is Adobe Cef helper? Everything you need to know

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