Fix Adobe Acrobat Cannot Reach Servers When Syncing Comments
Question details
The user is unable to sync PDF comments or share new documents due to an unexpected server-processing error.
- Product
- Adobe Acrobat
- Device & OS
- Windows
- Scenario
- Attempting to share new PDF documents or synchronize collaborative comments across accounts.
- Observed behavior
- Acrobat displays an error stating it cannot reach the servers, and the issue persists even after signing out, restarting the device, and updating the application.
Ensure your internet connection is stable and verify that your system firewall or proxy settings are not actively blocking Adobe's network traffic.
End the Sync Process and Delete the Synchronizer Folder
Clearing the corrupted local synchronization cache is the most effective way to resolve server connectivity errors in Adobe Acrobat.
Acrobat relies on a background service to push and pull your document comments from the cloud. If the local cache for this service becomes corrupted, you will experience unexpected server-processing errors.
Press Ctrl + Shift + Esc to open Task Manager. Locate the 'AdobeCollabSync.exe' process, right-click it, and select 'End Task'.
Press Win + R to open the Run dialog, type '%appdata%' and hit Enter. Navigate back to the 'LocalLow' folder, then proceed to C:\Users\[username]\AppData\LocalLow\Adobe\Acrobat\[Track]\Acrobat\.
Locate the folder named 'Synchronizer'. Right-click the folder and select 'Delete' to remove it completely from your system.
Launch Adobe Acrobat, sign back into your account, and attempt to sync your comments or share your document again.
Collect Fiddler HTTPS Session Logs
If resetting the cache does not resolve the issue, collecting network logs will help advanced support teams identify deep-seated server blocks.
Easily Share and Collaborate on PDFs with WPS Office
If Acrobat's persistent sync issues are disrupting your workflow, use WPS Office to smoothly add, share, and synchronize PDF comments. WPS provides a highly reliable, cloud-based collaboration environment tailored for fast and efficient teamwork.
- 1. Open your PDF in WPS Office: Launch WPS Office and open the PDF document you want to review and collaborate on.
- 2. Add your comments: Navigate to the 'Comment' tab to quickly add text boxes, highlights, sticky notes, and annotations.
- 3. Save to WPS Cloud: Click the 'Save' icon and select WPS Cloud as the destination to ensure real-time saving and syncing.
- 4. Share with collaborators: Click the 'Share' button in the top-right corner to generate a secure sharing link, allowing others to view and sync comments instantly.
Frequently Asked Questions
Why is Adobe Acrobat showing an unexpected server-processing error?
This error generally occurs due to a corrupted local synchronization cache (managed by AdobeCollabSync.exe), strict local firewall settings, or temporary connectivity problems with Adobe's cloud servers.
Will deleting the Synchronizer folder erase my PDF files?
No. Deleting the local Synchronizer folder only removes temporary cached sync data from your computer. Your actual PDF documents safely stored in the cloud will not be affected.
What is the AdobeCollabSync.exe process?
It is a background process associated with Adobe Acrobat and Reader. Its primary function is to continuously sync your documents, comments, and collaborative edits between your local device and the Adobe Document Cloud.
How do I fix Acrobat comment sync issues on Mac?
On a Mac device, you can force-quit Adobe sync processes using the Activity Monitor and clear the Acrobat cache by deleting temporary files located in the ~/Library/Application Support/Adobe/Acrobat/ directory.
