Error # 503f when wanting to post online InDesign CC 2021 v16.0

[davidn34208716]

Hi
Error # 503f when wanting to post online
InDesign CC 2021 v16.0, message pop-up error # 503f: an unknown error occurred, retry aftar some time

I would like to get a solution to the problem

time

[Eduardo24479189jovn]

Did you solve this error? I have the same and I don´t finde the answer

[Eugene Tyson]

So strange nobody replied to this at the time.

There's a troubleshooting guide here

https://helpx.adobe.com/ie/indesign/kb/upload-error-publishing-indesign-document.html

Outside of this

If a document is not behaving well then try 

File>Export 

Choose IDML

Open the IDML in InDesign
Save the file as a new InDesign file with a new name
See if the issue persists.

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Try resetting your preferences:
The easiest way to reset everything is to delete the InDesign preferences: as soon as InDesign starts to boot hold down Shift, Alt, Ctrl (and Apple/Cmd if working on a Macintosh). A dialog will appear asking to delete the InDesign Preferences, select 'Yes' on this dialog.
Further info and instructions here if needed:
https://helpx.adobe.com/in/indesign/kb/indesign-preferences-support-file-locations.html

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Reinstalling rarely fixes everything - you can do a complete reinstall using the
Creative Cloud Cleaner Tool https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html

[ahmd26386005ik25]

I had the same problem with me, and when I looked at the responses, I was sure that there is no solution to the problem through Adobe staff .. this is a waste of time, nothing more

[kevin stohlmeyer]

Hi @ahmd26386005ik25 error 503f indicates the inability to verify the account while attempting to publish.

Check your firewall/wifi settings or the steps outlined in this document:

https://helpx.adobe.com/indesign/kb/upload-error-publishing-indesign-document.html