Synchronizing Folder Errors with Outlook Account

I keep getting “Synchronizing folder ‘xxx’ failed with an error: The remote server returned an error: (503) Server Unavailable” while using a outlook email.

Anyone else getting these errors or know how to fix it? It happens with all of the folders with that email address.

Hi, are you still experiencing this issue? Is there any more information in error message you are receiving?


Hi I am having this problem and it’s also happening for my wife’s outlook account. Very frustrating as eM Client is great, but if it’s not syncing half the time it’s useless.

Can you help?

Hi, are you receiving the same error message? Can you make a screenshot of the error?
Also what version of eM client are you currently using?

Thank you,

I am having this problem too. It seems to only be happening with the calendars. They come up during every sync with

I am on version 6.0.20320.0. This is the only issue holding me back from purchasing eM Client.

Hi Ashley, can you please download and install this update ?
Let me know if that helped your issue…

Thank you,

I only had a few minutes to test it before my computer went down for the last few hours running system updates but it looks like it’s working much better. Thank you!

If I run into any other problems I’ll let you know.

Great, glad that it helped, there were issues reported from our users using the same antivirus software, it can sometime mess with the application,
let me know if you come across this or any other issues or questions, we’ll be happy to help.

Thank you,

1 year ago? Has this ever been resolved?

Hello Ken, if you’re having issues with the application, please submit a query to the community, describing your issue in order to help us diagnose the problem.