Experiencing Data Access issue in Azure Portal for Many Data Types - 10/28 - Resolved

We've confirmed that all systems are back to normal with no customer impact to query data as of 10/27, 17:58 PST to 19:20 PST. Our logs show the incident started on 10/27, 17:58 PST and that during the 1 hours and 21 mins that it took to resolve the issue 3% of customers experienced Data access issues or delayed/missed Log Search alerts for resources hosted in PRODWUS2.

• Root Cause: The failure was due to instances of a backend service became unhealthy
• Incident Timeline: 10/27,17:58 PST through 19:20 UTC