Resolved
This incident has been resolved.
Monitoring
A fix has been implemented and we are monitoring the results.
Identified
The issue, according to Azure status page
Investigating a spike in 401 authentication errors We are actively investigating customer alerts of 401 authentication errors when pulling images from mcr.microsoft.com. We've identified a potential underlying factor related to a recent update made to a backed service and we are actively working on determining mitigation workstreams. More information will be provided shortly.
This message was last updated at 23:04 UTC on 15 June 2026
Investigating
We are currently investigating this issue.