# Mender client connection issues **URL:** \ **Category:** General Discussions\ **Created:** [July 15, 2020, 3:00pm UTC](https://hub.mender.io/t/mender-client-connection-issues/2196 "2020-07-15T15:00:21Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![PJK](https://avatars.discourse-cdn.com/v4/letter/p/bc79bd/32.png) [@PJK](https://hub.mender.io/u/PJK)\ **Post date:** [July 21, 2020, 8:39am UTC](https://hub.mender.io/t/mender-client-connection-issues/2196/4 "2020-07-21T08:39:36Z")
Hi Drew, My mistake with the multiple server URLs came from the fact that I though the client should also know how to reach the storage server (which was actually caused by what I thought was causing the large uploads to the server failing). In the meantime I found another forum thread that was specific to the problems with uploading large Artifact files to the server. It turns out that that was a bug in Server v2.3 that was resolved in Server 2.4. I’ve updated our Server installation to Server 2.4 and those problems have disappeared. We’ve been able to perform multiple updates of our test devices and have now rolled out our first Menderized firmware for use with the devices that will be used in the field. Here is a link to the forum thread about the large file upload issue: > [@Unable to upload artifacts to mender server 2.3](https://hub.mender.io/t/unable-to-upload-artifacts-to-mender-server-2-3/2165): > > Hello, I have been using Mender for our IOT projects for the past 2 years. For our new IOT project, I am using mender server v 2.3.x Git commit: git log -1 commit 49b6501cad00aec999218f012fbeffacc1507f36 (HEAD -\> my-production-setup, origin/2.3.x) Merge: 3a8f865 4a84c9e Author: Lluis Campos [lluis.campos@northern.tech](mailto:lluis.campos@northern.tech) Date: Tue Apr 28 15:53:32 2020 +0200 With this Mender server, from time to time I am not able to upload the mender artifacts successfully. Uploading artifacts results in … --- _[View the full topic](https://hub.mender.io/t/mender-client-connection-issues/2196)._