Update - Please be reminded that action is needed by customers before April 2, 2026 or their backups may stop. Instructions are on the original message of this incident.
Mar 11, 2026 - 14:39 UTC
Mar 11, 2026 - 14:39 UTC
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Feb 26, 2026 - 19:15 UTC
Feb 26, 2026 - 19:15 UTC
Scheduled - 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
Feb 26, 2026 19:15 - Apr 3, 2026 19:15 UTC
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
Feb 26, 2026 19:15 - Apr 3, 2026 19:15 UTC
Update - We found some customers were still experiencing issues due to an edge case. Fix has been applied. Monitoring.
Mar 06, 2026 - 18:04 UTC
Mar 06, 2026 - 18:04 UTC
Monitoring - Fix is applied. Source refresh and adding new cloud sources should work. We will keep this open and monitoring over the next 24 hours.
Mar 04, 2026 - 23:12 UTC
Mar 04, 2026 - 23:12 UTC
Identified - We are currently implementing a fix for this issue.
Mar 04, 2026 - 22:11 UTC
Mar 04, 2026 - 22:11 UTC
Update - This issue only impacts AWS cloud resources. Azure cloud resources are not impacted.
Mar 04, 2026 - 04:14 UTC
Mar 04, 2026 - 04:14 UTC
Investigating - We want to inform our customers of an issue when adding a new cloud source to CCS or when doing a source refresh. These features are currently impacted and not functional. This impact stems from the current AWS outage in the Middle East region. We are working on a fix to address this issue. We will provide updates as we make progress.
Mar 04, 2026 - 03:20 UTC
Mar 04, 2026 - 03:20 UTC
Update - We continue to work with the AWS team to address issues in ME-Central-1 & ME-South-1 regions. We will continue to provide updates as we get more from our cloud provider.
Mar 05, 2026 - 17:26 UTC
Mar 05, 2026 - 17:26 UTC
Update - We are closely working with the AWS team to address issues in ME-Central-1 & ME-South-1 regions. We will continue to provide updates as we get more from our cloud provider.
Mar 03, 2026 - 10:53 UTC
Mar 03, 2026 - 10:53 UTC
Investigating - We are currently experiencing an impact to our backend infrastructure in AWS ME-Central-1 region due to operational issues with our primary cloud provider (AWS).
Our team is actively monitoring the situation and working to minimize any disruption. We will share updates here as soon as we have more information on resolution and restored availability
Mar 02, 2026 - 10:26 UTC
Our team is actively monitoring the situation and working to minimize any disruption. We will share updates here as soon as we have more information on resolution and restored availability
Mar 02, 2026 - 10:26 UTC
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