Cognite Outage History

Status: Investigating We are investigating reports of service degradation and disruption affecting the 3D service in the az-tyo-002 cluster. 3D models and related API endpoints may be unavailable. Our engineering team is currently investigating the issue Affected components Cognite Data Fusion UI (Partial outage) Cognite Data Fusion API (Partial outage)

Status: Investigating We are investigating elevated errors affecting Atlas AI agent chat across multiple regions. Users may experience failed chat requests. Initial findings suggest upstream timeouts from Azure OpenAI in the East US 2 region may be contributing to the issue, including requests originating from other regions. We are continuing to investigate the cause and impact. Affected components Cognite Data Fusion UI (Partial outage) Cognite Data Fusion UI (Partial outage) Cognite Data Fusion API (Partial outage) Cognite Data Fusion API (Partial outage)

Status: Investigating We are currently investigating reports of increased latency and degraded performance affecting services in the az-phx-001 cluster (Azure West US 3). Our engineering teams are actively investigating the underlying storage performance and working on mitigating the issue. Next update will be provided within as soon as more information becomes available. Affected components Cognite Data Fusion API (Degraded performance)

Status: Investigating We are currently investigating an issue causing degraded performance for Transformations and Workflows in the westeurope-1 cluster. Customer Impact: • Delayed start times for scheduled transformation jobs. • Extended overall runtime for workflows and chained data pipelines. • Jobs are continuing to process and complete, but latency is significantly higher than baseline. Current Status & Actions: Engineering teams are actively investigating resource contention and applying mitigations across the worker pools to restore normal throughput. We will provide the next status update soon as further details are available. Affected components Cognite Data Fusion API (Degraded performance)

Status: Investigating We are currently investigating an issue where scheduled calculations created in Charts are delayed or failing to write new data points. Our engineering team is actively investigating the root cause. Further updates will be provided as soon as they become available. Affected components Cognite Data Fusion API (Partial outage)

Status: Investigating Current Status Update — INC-3602 (Scheduled Calculations in Charts) Impact: Scheduled calculation executions in Charts are failing or significantly delayed, preventing new data points from being written. The issue currently appears isolated to cluster az-tyo-gp-001 (verified working normally on aw-tyo-001). Current Findings: • High CPU utilization (100–1000%) observed on backend workers, causing jobs to fall hours behind schedule. • Extensive timeout errors and ~236 failed jobs recorded across the cluster over the weekend. • Newly created and existing scheduled calculations are affected. Current Actions & Next Steps: • Engineering is investigating the root cause of the CPU spike and timeout failures. • Evaluating remediation options to relieve backend load and process the backlog of calculations. Affected components Cognite Data Fusion API (Partial outage)

Status: Investigating We are currently investigating performance degradation and high latency affecting search and data modeling services in the westeurope-1 region. Impact: Search and aggregate requests may experience high latency or temporary failures. Newly created instances or index updates may take longer than expected to appear. Status: Our engineering team is currently scaling down background syncing processes to reduce load and restore cluster stability. Further updates will be posted as soon as they are available. Affected components Cognite Data Fusion API (Degraded performance) Cognite Data Fusion UI (Degraded performance)

Status: Investigating We have identified an issue affecting search and data modeling indexing in the westeurope-1 region. Users and automated pipelines in this cluster may experience delays in newly ingested data or schema updates appearing in search and data modeling views. Querying existing indexed data and other CDF services remain operational. Our engineering team has implemented traffic-shedding and resource adjustments to stabilize the underlying cluster, and indexing throughput is beginning to recover. We are closely monitoring cluster health and will provide our next update soon, Affected components Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion API (Degraded performance)

Status: Investigating We are currently investigating an issue impacting the Data Modeling service (datamodelstorage) in the az-arn-001 cluster. A large spike in traffic against Data Modeling endpoints has led to an elevated rate of 503 errors (affecting roughly 3% of requests) in this cluster. Users and services interacting with Data Modeling endpoints may experience intermittent request failures. Our engineering team is actively investigating the cause of the errors and working on mitigation steps. Further updates will be provided as more information becomes available Affected components Cognite Data Fusion UI (Degraded performance) Cogite Data Fusion API (Degraded performance)

Status: Investigating We are currently investigating an issue causing elevated 503 error rates and service degradation for Data Modeling services within the az-tyo-gp-001 cluster. Users and applications in this cluster may experience intermittent errors or failures when accessing data modeling endpoints and related features. Our engineering team is actively investigating the root cause to restore normal operations. Further updates will be shared as more information becomes available. Affected components Cognite Maintain (Degraded performance) Cognite InField (Degraded performance) Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion API (Degraded performance)

Status: Investigating The engineering team is investigating and fixing issues with the Data Modelling search and aggregate APIs in the westeurope-1 cluster. Customer impact includes increased error rates on DM APIs and in the data exploration app in Fusion, and delays before new data is available in search results. Affected components Cognite Maintain (Partial outage) Cognite Data Fusion API (Partial outage) Cognite InField (Partial outage) Cognite Data Fusion UI (Partial outage)

Status: Investigating This incident has been resolved. The issue causing HTTP 500/503 errors when searching or aggregating Data Models in westeurope-1 has been mitigated, and service performance has fully recovered. All systems are operating normally. Affected components Cognite Maintain (Partial outage) Cognite Data Fusion API (Partial outage) Cognite InField (Partial outage) Cognite Data Fusion UI (Partial outage)

Status: Investigating We experienced elevated 5XX error rates affecting the Timeseries and Sequences APIs on cluster az-pnq-gp-001 between approximately 07:18 and 07:45 CEST. Services have recovered and all deployments are healthy, with no indication of data loss. The engineering team is actively monitoring the service to ensure continued stability while completing the investigation into the underlying cause.

Status: Investigating Summary: We are currently investigating an issue impacting Data Model (DM) Search and aggregation queries in the westeurope-1 region. Customer Impact: Requests to search or aggregate data models in westeurope-1 may fail with HTTP 503 errors or return incomplete/delayed results. Core data storage and other regions are operating normally. Current Actions: Our engineering team is actively working on cluster recovery and load mitigation, including throttling background sync operations to restore search performance. Next Update: We are monitoring recovery progress and will provide another update within 60 minutes or as soon as significant updates are available. Affected components Cognite Data Fusion API (Partial outage)

Status: Investigating We are investigating issues with CDF-hosted Streamlit apps, where apps get the error ModuleNotFoundError: No module named 'ssl' We are investigating the issue. The issue can affect all users of Streamlit apps regardless of which CDF clusters they are hosted in. In the meantime, explicitly adding the "ssl" module to your app's Python requirements can fix the immediate problem and is worth trying as a workaround. Note: CDF-hosted Streamlit apps are in public preview: https://docs.cognite.com/cdf/streamlit/index#streamlit-apps and are not yet in production: https://docs.cognite.com/cdf/product_feature_status#public-preview.

Status: Investigating We are aware of a service outage affecting the CDF cluster westeurope-1. The issue has severe impact on some but not all of the projects in cluster and are caused by a database server outage after a routine maintenance operation. Cognite's engineering team is actively working with our cloud provider to resolve the issue. Affected components Cognite InField (Partial outage) Cognite Data Fusion UI (Partial outage) Cognite Maintain (Partial outage) Cognite Data Fusion API (Partial outage)

Status: Investigating We are currently investigating an elevated rate of 5xx errors affecting the Functions API. The issue appears to be caused by an upstream dependency disruption (Azure Key Vault RBAC loading timeout) in the Central US region, rather than a direct cluster-level outage. The connection rates are already stabilizing, and we are monitoring the recovery. Affected components Cognite Data Fusion API (Degraded performance)

Status: Investigating We are currently investigating an issue causing the Cogshop service to be unavailable. Our engineering team has identified the root cause and is actively working on a fix. We will provide further updates as soon as more information is available. Affected components Powerops (Full outage)

Status: Investigating We are currently investigating an issue affecting the InField application where a UI license watermark ("MUI X Missing License Key") is displayed. Impact: This is a minor visual UI issue and does not impact functionality, data integrity, or core user workflows. Our engineering teams are actively investigating the root cause and working on a resolution. Affected components Cognite InField (Degraded performance)

Status: Investigating We are currently investigating an issue affecting Cognite Maintain for OMV Romania Asset Oil in Production. Users with edit rights are unable to update an activity date, create duplicates, or run deferment calculations. Browsing and read actions continue to work normally. All other customers and clusters are unaffected. Our engineering team is actively investigating the root cause and will provide further updates as soon as possible Affected components Cognite Maintain (Degraded performance)

Status: Investigating We have identified a UI interuption affecting a subset of projects in the cluster that is related to a MUI X Missing license key overlay in the Search UI. The team is currently investigating and a fix is on the way. Affected components Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion API (Degraded performance)

Status: Investigating An issue has been identified affecting Custom Apps for some users, where the page may display "No apps available" despite apps being present. The root cause is currently under investigation, and updates will be provided as more information becomes available. Affected components Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion UI (Degraded performance) Cognite Data Fusion UI (Degraded performance) Cognite Hub (Degraded performance)