Experiencing Data Latency issue in Azure Portal for Many Data Types - 01/19 - Resolved
Published Jan 19 2021 10:34 AM 1,271 Views
Final Update: Tuesday, 19 January 2021 18:57 UTC

We've confirmed that all systems are back to normal with no customer impact as of 1/19, 17:53 UTC. Our logs show the incident started on 1/19, 17:26 UTC and that during the 27 minutes that it took to resolve the issue impacted customers experienced ingested data latency and possible alerts misfiring due to latent data.
  • Root Cause: The failure was due to a large unexpected ingress of data to a scale unit.
  • Incident Timeline: 27 minutes - 1/19, 17:26 UTC through 1/19, 17:53 UTC
We understand that customers rely on Application Insights as a critical service and apologize for any impact this incident caused.


Initial Update: Tuesday, 19 January 2021 18:32 UTC

We are aware of issues within Application Insights and are actively investigating. Some customers in East US region may experience delayed or missed Log Search Alerts and Data Latency.
  • Next Update: Before 01/19 20:00 UTC
We are working hard to resolve this issue and apologize for any inconvenience.

Version history
Last update:
‎Jan 19 2021 11:06 AM
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