Cohesity Outage History

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Cohesity had 17 outages in the last 2 years totaling 1125h 49m of downtime — averaging 0.7 incidents per month.

There were 17 Cohesity outages since October 20, 2025 totaling 1125h 49m of downtime. Each is summarised below — incident details, duration, and resolution information.

Source: https://status.cohesity.com

Minor September 30, 2026

Degraded performance in Helios management console

Detected by Pingoru
Sep 30, 2026, 03:32 PM UTC
Resolved
Sep 30, 2026, 07:22 PM UTC
Duration
3h 49m
Affected: Cohesity Cloud Services Portal
Timeline · 4 updates
  1. investigating Sep 30, 2026, 03:32 PM UTC

    We are investigating an issue affecting the Helios management console. Some customers may experience errors, slow page loads, or difficulty accessing certain UI features. Backup and recovery operations already running on your clusters are not expected to be affected. Our engineering team is actively working to identify the cause. There is no need to open a support case at this time; we will post updates here as more information becomes available.

  2. identified Sep 30, 2026, 04:14 PM UTC

    The issue has been identified and team is working on implementing the fix.

  3. monitoring Sep 30, 2026, 05:32 PM UTC

    A fix has been implemented and we are monitoring the results

  4. resolved Sep 30, 2026, 07:22 PM UTC

    This incident has been resolved.

Read the full incident report →

Major September 28, 2026

Cohesity Cloud Services Infrastructure Maintenance

Detected by Pingoru
Sep 28, 2026, 04:15 PM UTC
Resolved
Sep 28, 2026, 07:32 PM UTC
Duration
3h 17m
Affected: Cluster connectivityInfrastructureCohesity NetBackupCohesity IT Analytics
Timeline · 5 updates
  1. investigating Sep 28, 2026, 04:15 PM UTC

    During our scheduled backend infrastructure maintenance, we identified issues impacting a subset of services. The maintenance window is still in progress, and our engineering team is actively investigating and working to restore full service.

  2. investigating Sep 28, 2026, 04:17 PM UTC

    We are continuing to investigate this issue.

  3. identified Sep 28, 2026, 04:39 PM UTC

    We have identified the root cause of the issue. Our engineering team is actively implementing a fix.

  4. monitoring Sep 28, 2026, 04:57 PM UTC

    A fix has been implemented and we are monitoring the environment.

  5. resolved Sep 28, 2026, 07:32 PM UTC

    This incident has been resolved.

Read the full incident report →

Notice September 22, 2026

Data Processing Delays - GlobalSearch Affected

Detected by Pingoru
Sep 22, 2026, 06:41 PM UTC
Resolved
Sep 25, 2026, 01:41 AM UTC
Duration
2d 6h
Affected: Cohesity Cloud Services Portal
Timeline · 2 updates
  1. investigating Sep 22, 2026, 06:41 PM UTC

    GlobalSearch on the Helios platform may show delayed or stale information due to an unplanned background sync issue. Our team has identified the cause and is actively working to resolve it. We'll post an update once syncing is back to normal — thanks for your patience!

  2. resolved Sep 25, 2026, 01:41 AM UTC

    This incident has been resolved. The sync is back to normal.

Read the full incident report →

Notice September 1, 2026

Microsoft Issue May have impacted M365 workloads (CCS)

Detected by Pingoru
Sep 01, 2026, 05:34 PM UTC
Resolved
Sep 01, 2026, 05:34 PM UTC
Duration
—
Affected: Data Protect delivered as a Service
Timeline · 1 update
  1. resolved Sep 01, 2026, 05:34 PM UTC

    We have been made aware of an issue on the Microsoft side of degradation of services which are impacting CCS workloads. Our understanding is that they have remediated the issue and things should be corrected. If you continue to experience problems, please contact Cohesity Support. More information can be found at: https://status.cloud.microsoft/m365/referrer=serviceStatusRedirect

Read the full incident report →

Minor August 24, 2026

Intermittent issue impacting OneDrive and Mailbox workloads in CCS.

Detected by Pingoru
Aug 24, 2026, 08:47 PM UTC
Resolved
Sep 16, 2026, 01:47 PM UTC
Duration
22d 16h
Affected: Cohesity Cloud Services Portal
Timeline · 2 updates
  1. identified Aug 24, 2026, 08:47 PM UTC

    We are currently investigating an intermittent issue impacting certain Microsoft 365 backup jobs (OneDrive and mailbox workloads). Some objects may temporarily be reported as Unprotected, and new backup jobs may be temporarily unable to run. Please be assured this is not attributable to any action on your part; our team has identified the root cause and is implementing a fix. We will provide further updates as they become available.

  2. resolved Sep 16, 2026, 01:47 PM UTC

    This issue has been resolved.

Read the full incident report →

Minor August 24, 2026

Data Processing Delays - Activity Page and Reports Affected

Detected by Pingoru
Aug 24, 2026, 05:16 PM UTC
Resolved
Aug 25, 2026, 03:39 PM UTC
Duration
22h 22m
Affected: Cohesity Cloud Services Portal
Timeline · 3 updates
  1. investigating Aug 24, 2026, 05:16 PM UTC

    The Activity Page and Reports on the Helios platform may show delayed or stale information due to an unplanned background sync issue. Our team has identified the cause and is actively working to resolve it. We'll post an update once syncing is back to normal — thanks for your patience!

  2. monitoring Aug 25, 2026, 10:51 AM UTC

    We have deployed a fix, and the sync is expected to complete within the next six hours. We will keep you updated on the progress.

  3. resolved Aug 25, 2026, 03:39 PM UTC

    The Activity Page and Reports on the Helios platform should be fully functional with no lag now.

Read the full incident report →

Major June 3, 2026

Helios Gov & CCS Gov Impact

Detected by Pingoru
Jun 03, 2026, 06:35 PM UTC
Resolved
Jun 04, 2026, 08:20 PM UTC
Duration
1d 1h
Affected: Cohesity Cloud Services PortalData Protect delivered as a ServiceCluster connectivity
Timeline · 4 updates
  1. investigating Jun 03, 2026, 06:35 PM UTC

    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.

  2. investigating Jun 03, 2026, 07:45 PM UTC

    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.

  3. monitoring Jun 04, 2026, 12:12 AM UTC

    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.

  4. resolved Jun 04, 2026, 08:20 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor May 13, 2026

Stale Activity Page and Reporting Data on Helios

Detected by Pingoru
May 13, 2026, 03:22 PM UTC
Resolved
May 14, 2026, 09:26 AM UTC
Duration
18h 4m
Affected: Cohesity Cloud Services PortalCohesity FortKnoxCohesity DataHawk
Timeline · 2 updates
  1. monitoring May 13, 2026, 03:22 PM UTC

    Some parts of the Helios platform, including the Activity Page and Reports, may display delayed or stale information due to recent system maintenance. Your data is safe we're actively re-syncing everything and will update you as soon as services are fully restored. Thank you for your patience.

  2. resolved May 14, 2026, 09:26 AM UTC

    This incident has been resolved.

Read the full incident report →

Notice May 8, 2026

CCS AWS Availability Zone incident on US-EAST-1 - minor impact

Detected by Pingoru
May 08, 2026, 06:04 PM UTC
Resolved
May 09, 2026, 03:31 PM UTC
Duration
21h 26m
Affected: Data Protect delivered as a Service
Timeline · 2 updates
  1. monitoring May 08, 2026, 06:04 PM UTC

    AWS has notified us of some impacted nodes on specific availability zones in US-EAST-1 clusters. All backups are still running on impacted clusters. Cohesity has added more infrastructure to mitigate this issue, but backup jobs may run longer than expected. AWS expects to be restored to full capacity within a day.

  2. resolved May 09, 2026, 03:31 PM UTC

    AWS has resolved the issue. Everything seems to be back on line.

Read the full incident report →

Major April 30, 2026

SSO authentication

Detected by Pingoru
Apr 30, 2026, 06:32 PM UTC
Resolved
May 01, 2026, 04:20 PM UTC
Duration
21h 48m
Affected: Cohesity Cloud Services PortalIdentity Management
Timeline · 3 updates
  1. investigating Apr 30, 2026, 06:32 PM UTC

    We want to let our customers know that we are currently working on an intermittent issue with logging into Helios via SSO integration. We are actively working to resolve the problem and will keep you updated on our progress.

  2. identified Apr 30, 2026, 09:57 PM UTC

    The issue has been identified and a fix is being implemented.

  3. resolved May 01, 2026, 04:20 PM UTC

    A fix has been rolled out for this issue, and our internal monitoring indicates that all login issues have been resolved.

Read the full incident report →

Major March 4, 2026

CCS - Source Refresh and New Cloud Source Additions Currently Not Working

Detected by Pingoru
Mar 04, 2026, 03:20 AM UTC
Resolved
Mar 18, 2026, 04:24 PM UTC
Duration
14d 13h
Affected: Data Protect delivered as a Service
Timeline · 6 updates
  1. investigating Mar 04, 2026, 03:20 AM UTC

    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.

  2. investigating Mar 04, 2026, 04:14 AM UTC

    This issue only impacts AWS cloud resources. Azure cloud resources are not impacted.

  3. identified Mar 04, 2026, 10:11 PM UTC

    We are currently implementing a fix for this issue.

  4. monitoring Mar 04, 2026, 11:12 PM UTC

    Fix is applied. Source refresh and adding new cloud sources should work. We will keep this open and monitoring over the next 24 hours.

  5. monitoring Mar 06, 2026, 06:04 PM UTC

    We found some customers were still experiencing issues due to an edge case. Fix has been applied. Monitoring.

  6. resolved Mar 18, 2026, 04:24 PM UTC

    This issue should be resolved. If you continue to experience issues with adding resources or source refresh, please work with our support team.

Read the full incident report →

Major February 6, 2026

Cohesity Cloud Services Backup issues involving Azure

Detected by Pingoru
Feb 06, 2026, 04:51 PM UTC
Resolved
Feb 06, 2026, 11:20 PM UTC
Duration
6h 28m
Affected: Data Protect delivered as a Service
Timeline · 3 updates
  1. investigating Feb 06, 2026, 04:51 PM UTC

    We are seeing connectivity issues related to Azure. We are currently investigating and will provide updates here. Our connections with AWS are not impacted.

  2. monitoring Feb 06, 2026, 05:03 PM UTC

    We have identified the issue and have applied a fix and are closely monitoring.

  3. resolved Feb 06, 2026, 11:20 PM UTC

    This issue has been resolved.

Read the full incident report →

Notice January 7, 2026

Helios Connectivity

Detected by Pingoru
Jan 07, 2026, 09:40 PM UTC
Resolved
Jan 08, 2026, 01:27 AM UTC
Duration
3h 46m
Affected: Cohesity Cloud Services PortalData Protect delivered as a ServiceCluster connectivity
Timeline · 5 updates
  1. investigating Jan 07, 2026, 09:40 PM UTC

    We want to let our customers know that we are seeing connectivity issues between the Cohesity Cluster and the Helios service. We are currently looking into this issue, and we will update you on the progress. We really apologize for the inconvenience.

  2. investigating Jan 07, 2026, 09:58 PM UTC

    We want to let our customers know that activities on the Data Protect services are also impacted and we are aggressively working to resolve this issue.

  3. identified Jan 07, 2026, 10:18 PM UTC

    We have identified the issue and are working on a fix. We will keep you updated on the progress.

  4. monitoring Jan 07, 2026, 10:41 PM UTC

    A fix has been deployed, and we are closely monitoring the situation.

  5. resolved Jan 08, 2026, 01:27 AM UTC

    This incident has been resolved.

Read the full incident report →

Notice November 26, 2025

Microsoft Issue Impacting CCS backup jobs

Detected by Pingoru
Nov 26, 2025, 04:41 PM UTC
Resolved
Nov 26, 2025, 10:51 PM UTC
Duration
6h 10m
Affected: Data Protect delivered as a Service
Timeline · 3 updates
  1. investigating Nov 26, 2025, 04:41 PM UTC

    Customers with F3 O365 licenses may experience backup issues with a 403 response code. Microsoft is aware of the issue and is rolling out a fix. We will send out another notice when we believe it is resolved.

  2. identified Nov 26, 2025, 04:43 PM UTC

    The issue has been identified and a fix is being implemented.

  3. resolved Nov 26, 2025, 10:51 PM UTC

    Microsoft has rolled out a fix and all should be resolved. If you are still experiencing issues, please reach out to our support team.

Read the full incident report →

Major November 18, 2025

Issues accessing the Helios service

Detected by Pingoru
Nov 18, 2025, 10:20 PM UTC
Resolved
Nov 19, 2025, 05:03 AM UTC
Duration
6h 43m
Affected: Cohesity Cloud Services Portal
Timeline · 3 updates
  1. investigating Nov 18, 2025, 10:20 PM UTC

    We want to let our customers know that we are seeing issues accessing the Helios services. We are working to resolve the problem as soon as possible. We apologize for the inconvenience.

  2. monitoring Nov 18, 2025, 11:04 PM UTC

    Helios service is currently up and running. We are working to understand the root cause of the issue and will keep our customers posted on the update.

  3. resolved Nov 19, 2025, 05:03 AM UTC

    This incident has been resolved.

Read the full incident report →

Minor November 4, 2025

Intermittent delays in loading Activity & Reporting page on Helios

Detected by Pingoru
Nov 04, 2025, 12:50 PM UTC
Resolved
Nov 05, 2025, 05:43 PM UTC
Duration
1d 4h
Affected: Cohesity Cloud Services Portal
Timeline · 3 updates
  1. investigating Nov 04, 2025, 12:50 PM UTC

    Our users may experience intermittent delays in seeing latest job updates in "Activity page & Reporting page". The team has identified the issue and is verifying the fix.

  2. monitoring Nov 05, 2025, 07:02 AM UTC

    We have deployed a fix and are monitoring the system health.

  3. resolved Nov 05, 2025, 05:43 PM UTC

    This incident has been resolved.

Read the full incident report →

Notice October 20, 2025

AWS outage impact on backups

Detected by Pingoru
Oct 20, 2025, 02:32 PM UTC
Resolved
Oct 20, 2025, 10:43 PM UTC
Duration
8h 11m
Affected: Data Protect delivered as a Service
Timeline · 2 updates
  1. investigating Oct 20, 2025, 02:32 PM UTC

    We want to let our customers know that some of the backup runs have been impacted due to the AWS outage. We are closely looking at the issue and will be sending communication to our customers on the impacted runs.

  2. resolved Oct 20, 2025, 10:43 PM UTC

    AWS has reported that most of its services have recovered at this time. We have also communicated with our impacted customers due to this outage through emails and support bot cases. Our current metrics indicate that all backups are functioning normally. We are closing this incident at this time. If you have any questions, please contact Cohesity Support.

Read the full incident report →