Is Cohesity Helios Down?

Scheduled maintenance is currently in progress. We will provide updates as necessary. --- [2026-08-10T13:00:14.296Z] (scheduled) Maintenance will begin as scheduled in 60 minutes. --- [2026-08-06T15:12:46.726Z] (scheduled) We will be performing a scheduled upgrade on Cohesity Cloud Services. There will be no impact to customers during the maintenance window. The changes are rolled out to all services listed in the Cohesity status page. Customers should be able to login to manage their data and all operations including backups, cluster management, DR should function as usual. Should you experience any issues, please reach out to Cohesity support.

We are reissuing this incident statement as Microsoft has recently made the change and we have seen many tenants that have not migrated. Below is the original incident language that was sent in February 2026. Cohesity is issuing this advisory to inform our Cloud Protection Service (CPS) customers of an important change regarding authentication for Microsoft 365 workflows. Microsoft is retiring Azure Access Control Service (ACS), effective April 2, 2026. Currently, ACS is utilized for authentication in certain Microsoft 365 workflows, including backups for SharePoint, OneDrive, Teams, and Groups. After April 2, 2026, backups for these protection jobs will fail unless customers migrate to Certificate-Based Authentication (CBA). To ensure uninterrupted service and data protection, we strongly recommend that all customers review the provided Knowledge Base (KB) article and follow the migration instructions. This impacts all regions and all CCS customers. Recommended Action: All recipients of this Field Notice are advised to review the KB article from the additional Resources section for detailed information and recommended preventive actions. KB article: https://support.cohesity.com/s/article/Steps-to-enable-CBA-Migration-for-CPS Microsoft change announcement: https://learn.microsoft.com/en-us/sharepoint/dev/sp-add-ins/retirement-announcement-for-azure-acs

This incident has been resolved. --- [2026-06-04T00:12:04.573Z] (monitoring) We have deployed a fix to address the issue and are closely monitoring the situation to ensure stability. We will continue to keep you updated as we confirm full resolution. Thank you for your patience. --- [2026-06-03T19:45:33.354Z] (investigating) We have identified the root cause of the current outage and our team is actively working toward a resolution. This issue affects only CCS customers on Helios Gov. Customers managing on-premises clusters through Helios Gov are not impacted and can continue operating normally. We will share a further update as soon as one is available. We appreciate your patience. --- [2026-06-03T18:35:58.752Z] (investigating) We want to let you know that we are encountering issues with our Helios service. As a result of this you might experience frequent logout in the Management portal and device connector service. We are aggressively working to resolve the issues. We apologize for any inconvenience.