- Go to InDesign Help Menu and choose Sign-out.
- Restart InDesign and sign-in again.
- Try publishing your documents again.
User receives an upload error while Publishing an InDesign Document using the Publish online feature.
If you are experiencing issues with publishing a specific document, it is most likely that some of your linked files are failing to upload.
For a detailed resolution, please post your issue on https://community.adobe.com/t5/indesign/try-the-new-publish-online-preview-feature-in-indesign-cc-2015/td-p/7303078?page=1. Also, send an email with your InDesign document package to firstname.lastname@example.org with the title: "PublishOnline document-specific upload error".
If you are experiencing upload issues with all your InDesign documents, we have identified a number of possible causes (and resolutions) given below:
If the issue is still not resolved, check if the network proxy settings on your system are enabled.
If issue still persists, try publishing your documents from another network.
If publishing works on another network, then there might be some restrictions in your network to external domains.
In this case, you need to whitelist the following Publish Online domains in your network:
If the issue is still not resolved: