How to Fix AdobeCollabSync.exe Preventing PDF Folder Deletion
Question details
Users cannot delete or rewrite PDF files or folders because the AdobeCollabSync process keeps the file handles open even after Acrobat is closed.

- Product
- Adobe Acrobat DC
- Device & OS
- Windows
- Scenario
- Attempting to delete or automatically regenerate PDF files and folders within a Windows environment.
- Observed behavior
- The system prevents deletion or rewriting of the PDF folder, displaying an access error because AdobeCollabSync.exe still has a locked handle on the file or folder.
Ensure that you have closed all active Adobe Acrobat windows and saved your work before forcefully ending background processes in Task Manager.
End the AdobeCollabSync Process via Task Manager
Quickly force-close the background sync process to release the file lock and allow folder deletion.
Press Ctrl + Shift + Esc on your keyboard, or right-click the taskbar and select Task Manager.
Navigate to the Details tab or Processes tab, and scroll down to find AdobeCollabSync.exe in the list.
Right-click on AdobeCollabSync.exe and select End task. This immediately releases the handle on your PDF files and folders.

Semi-permanently Disable AdobeCollabSync
Rename the executable file and disable its startup behavior to prevent the locking issue from recurring.
Manage PDFs Seamlessly with WPS Office
If background processes from other PDF readers are interrupting your workflow by unexpectedly locking files, consider switching to WPS Office. It provides a lightweight, highly compatible PDF suite that won't lock your files, making document generation and management completely hassle-free.

Frequently Asked Questions
What exactly does AdobeCollabSync.exe do?
It is a background service for Adobe Acrobat DC designed to sync document reviews and facilitate collaboration on cloud PDFs. However, it can inadvertently keep files locked even after closing the main application.
Can I use Windows Resource Monitor to find which file is locked?
Yes, you can open Windows Resource Monitor, go to the CPU tab, and type your PDF or folder name into the Associated Handles search box to confirm if AdobeCollabSync is the process locking it.
Will renaming AdobeCollabSync.exe break my Adobe Acrobat installation?
No, it will not break your core PDF reading or editing functionalities. However, it will disable Adobe's cloud collaboration and automatic background syncing features.
Why did AdobeCollabSync.exe return after I disabled it?
When Adobe Acrobat DC receives a software update, it often verifies its installation files and downloads a fresh copy of missing or modified components, restoring the AdobeCollabSync.exe file.




