Title: CDN synchronization problem
Last modified: September 1, 2023

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# CDN synchronization problem

 *  [Roman Bouchner](https://wordpress.org/support/users/elementarypos/)
 * (@elementarypos)
 * [2 years, 9 months ago](https://wordpress.org/support/topic/cdn-synchronization-problem/)
 * Hi
 * I am trying to setup CDN with Amazon. Everything looks fine, however, some files
   are not synchronized and missing in CDN.
   For example this folder is not fully
   synchronized:/wp-content/uploadsUnsuccessful file transfer queue is empty.The
   missing files are not included in the transfer queue.
 * Also, Total Cache tries to transfer files that no longer exist.
 * Thank you for any ideas.
 * Roman

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/)
 * (@vmarko)
 * [2 years, 9 months ago](https://wordpress.org/support/topic/cdn-synchronization-problem/#post-17019395)
 * Hello [@elementarypos](https://wordpress.org/support/users/elementarypos/)
 * Thank you for reaching out and I am happy to assist you with this.
 * Can you please specify if you are using Push CDN or Pull, and also, please share
   the Performance>CDN screen screenshot and the website URL so I can inspect the
   website.
 * Thanks!
 *  Thread Starter [Roman Bouchner](https://wordpress.org/support/users/elementarypos/)
 * (@elementarypos)
 * [2 years, 9 months ago](https://wordpress.org/support/topic/cdn-synchronization-problem/#post-17019749)
 * Hi Marko,
 * Thank you for your quick reponse. It is Amazon CloudFront Over S3 – Push CDN.
   The URL is [https://elementarypos.com](https://elementarypos.com). Now CDN is
   disabled, because it doesn’t work well. Some files are missing as I mentioned
   it before.
 * Screenshots:
 * [https://elementarypos.com/wp-content/uploads/2023/09/1.png](https://elementarypos.com/wp-content/uploads/2023/09/1.png)
 * [https://elementarypos.com/wp-content/uploads/2023/09/2.png](https://elementarypos.com/wp-content/uploads/2023/09/2.png)
 * [https://elementarypos.com/wp-content/uploads/2023/09/3.png](https://elementarypos.com/wp-content/uploads/2023/09/3.png)
 * [https://elementarypos.com/wp-content/uploads/2023/09/4.png](https://elementarypos.com/wp-content/uploads/2023/09/4.png)
 * Thank you
 *  Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/)
 * (@vmarko)
 * [2 years, 9 months ago](https://wordpress.org/support/topic/cdn-synchronization-problem/#post-17023982)
 * Hello [@elementarypos](https://wordpress.org/support/users/elementarypos/)
 * Thank you for your feedback.
 * In order to see the issue it would be great if the CDN was enabled.
   At the moment
   I am not seeing any missing 404 files in the console. Have you tried completely
   purging the CDN?
 * Thanks!
 *  Thread Starter [Roman Bouchner](https://wordpress.org/support/users/elementarypos/)
 * (@elementarypos)
 * [2 years, 9 months ago](https://wordpress.org/support/topic/cdn-synchronization-problem/#post-17024725)
 * Hi [@vmarko](https://wordpress.org/support/users/vmarko/)
 * Thank you for your reply. The problem is, that not all files are synchronized.
   The file is present in the WordPress site, but missing in the CDN.
 * One interesting thing to mention:
 *  W3 Total cache is trying to synchronize the file that does not exist. You can
   see it in the screenshot:
 * [https://elementarypos.com/wp-content/uploads/2023/09/info-transfer.png](https://elementarypos.com/wp-content/uploads/2023/09/info-transfer.png)
 * This file is actually in a different folder.
 * It’s as if browsing the files on the disk is somehow malfunctioning. It’s like
   it came from a cache.
 * Maybe it is related to the original problem ? That W3 Total cache doesn’t have
   an updated list of files and therefore doesn’t send them to the CDN?
 *  Plugin Contributor [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/)
 * (@vmarko)
 * [2 years, 9 months ago](https://wordpress.org/support/topic/cdn-synchronization-problem/#post-17027170)
 * Hello [@elementarypos](https://wordpress.org/support/users/elementarypos/)
 * Let me check this and try to replicate and I’ll get back to you.
 * Thanks!

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘CDN synchronization problem’ is closed to new replies.

 * ![](https://ps.w.org/w3-total-cache/assets/icon-256x256.png?rev=1041806)
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 * 5 replies
 * 2 participants
 * Last reply from: [Marko Vasiljevic](https://wordpress.org/support/users/vmarko/)
 * Last activity: [2 years, 9 months ago](https://wordpress.org/support/topic/cdn-synchronization-problem/#post-17027170)
 * Status: not resolved