Function deployment failures at 35-40% in az-eastus-1

Update timeline

1. investigating Apr 17, 2026, 04:29 PM UTC

   Status: Investigating Customers are seeing 35-40% of function deployments failing. Possible correlation to an issue with the files api returning large amounts of 429 codes. Affected components Cognite Data Fusion API (Partial outage)

2. investigating Apr 17, 2026, 04:31 PM UTC

   Status: Investigating Currently doing triage on the API issue with incident commander. Affected components Cognite Data Fusion API (Partial outage)

3. identified Apr 17, 2026, 07:15 PM UTC

   Status: Identified Cognite has discovered a certificate that has expired that is impacting az-eastus-1 customers. More info to come as we work to renew the cert. Affected components Cognite Data Fusion API (Partial outage)

4. monitoring Apr 17, 2026, 08:45 PM UTC

   Status: Monitoring Our engineering team oncall was unable to renew the certificate at the time as he was not at home or in the office. We are hopeful that the cert will be renewed as soon as possible. Affected components Cognite Data Fusion API (Degraded performance)

5. investigating Apr 17, 2026, 09:16 PM UTC

   Status: Investigating We've noticed there are frequent function deployments failing in az-eastus-1 and we are investigating the issue. Due to the technically of the situation we are awaiting more information from relevant parties, and have paused the incident as we don't see any clear backend issues. Affected components Cognite Data Fusion API (Degraded performance)

6. identified Apr 20, 2026, 08:04 PM UTC

   Status: Identified Cognite continues to work on this issue affecting function deployments. Currently, there is a hypothesis around deploying functions to entra virtual networks. We will provide updates as soon as progress is made. Affected components Cognite Data Fusion API (Degraded performance)

7. monitoring Apr 21, 2026, 04:41 PM UTC

   Status: Monitoring Cognite will be placing this incident in monitoring status. Investigation has shifted to an issue with Microsofts AZ-EASTUS-1. It appears a vnet was deployed by Microsoft last week and was not available to it's customers. Affected components Cognite Data Fusion API (Operational)

8. resolved Apr 24, 2026, 08:10 AM UTC

   Status: Resolved After carefully monitoring the implemented fixes, our engineering team has confirmed that the incident has been resolved. Affected components Cognite Data Fusion API (Operational)