We will be upgrading our Veeam Cloud Connect (VCC) to the latest version of Veeam's software, 9.5 Update 4 at 12 noon CST on January 28th 2019. For the duration of this upgrade our VCC clusters will be unavailable, and any backup copy jobs that attempt to run during this time will fail. Once the upgrade is complete any jobs targeting the Cloud Connect repository should automatically resume. This maintenance will take approximately 1 hour. You can find release notes here: https://www.veeam.com/veeam_backup_9_5_u4_release_notes_rn.pdf
Please note that until our Cloud Connect clusters are updated we request that you do not upgrade your local instance, as this will make your Veeam Backup & Replication server incompatible with the VCC clusters.
If there are any questions or issues regarding this upgrade please do not hesitate to reach out to our support team. Thanks!