# Artifacts download error " 503 Service Unavailable: Back-end server is at capacity"

**URL:** <https://discuss.circleci.com/t/artifacts-download-error-503-service-unavailable-back-end-server-is-at-capacity/3370>\
**Category:** Build Environment\
**Created:** [April 15, 2016, 9:33am UTC](https://discuss.circleci.com/t/artifacts-download-error-503-service-unavailable-back-end-server-is-at-capacity/3370 "2016-04-15T09:33:25Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dgtlmoon](https://avatars.discourse-cdn.com/v4/letter/d/ecd19e/32.png) [@dgtlmoon](https://discuss.circleci.com/u/dgtlmoon)\
**Post date:** [April 15, 2016, 9:33am UTC](https://discuss.circleci.com/t/artifacts-download-error-503-service-unavailable-back-end-server-is-at-capacity/3370/1 "2016-04-15T09:33:25Z")

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I’ve been seeing this issue for quite some time and they are required to debug the output of a build/test.

Resolving [circle-artifacts.com](http://circle-artifacts.com) ([circle-artifacts.com](http://circle-artifacts.com))… 52.6.227.217, 52.5.120.214, 54.85.71.97  
Connecting to [circle-artifacts.com](http://circle-artifacts.com) ([circle-artifacts.com](http://circle-artifacts.com))|52.6.227.217|:443… connected.  
HTTP request sent, awaiting response… 503 Service Unavailable: Back-end server is at capacity  
2016-04-15 11:30:12 ERROR 503: Service Unavailable: Back-end server is at capacity.

update: seems to be OK again

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**Author:** ![zzak](https://sea2.discourse-cdn.com/circleci/user_avatar/discuss.circleci.com/zzak/32/4233_2.png) [@zzak](https://discuss.circleci.com/u/zzak)\
**Post date:** [September 7, 2016, 8:18am UTC](https://discuss.circleci.com/t/artifacts-download-error-503-service-unavailable-back-end-server-is-at-capacity/3370/2 "2016-09-07T08:18:07Z")

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Sorry we missed this, but glad the issue was resolved!

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**Author:** ![system](https://global.discourse-cdn.com/circleci/original/3X/5/1/511608acda8e85906e15909b57bd0a46c1dbe291.png) [@system](https://discuss.circleci.com/u/system)\
**Post date:** [June 18, 2018, 11:32am UTC](https://discuss.circleci.com/t/artifacts-download-error-503-service-unavailable-back-end-server-is-at-capacity/3370/3 "2018-06-18T11:32:02Z")

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