Outage in Mimecast
Degraded service impacting Partner Administration Console access
Resolved Minor
June 18, 2026 - Started 29 days ago
- Lasted about 4 hours
Incident Report
Summary AI Generated
Mimecast experienced a ~4-hour incident where Partner Administrators were caught in a login loop when attempting to access customer Administration Consoles through the Partner Portal. While login to the Partner Portal itself remained functional, users were repeatedly logged out upon attempting to navigate to customer consoles, affecting all global grids. The incident was under active engineering investigation throughout its duration.
We are aware that some Partner Administrators may be experiencing a login loop when attempting to access the Administration Console. We are currently investigating this issue and will post further updates here as they become available.
Components affected
Mimecast South African Grid Mimecast Australian Grid Mimecast Offshore Grid Mimecast Canadian Grid Mimecast United Kingdom Grid Mimecast United States Grid Mimecast United States B Grid Mimecast German GridTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
29 days ago - at 06/18/2026 04:09PM
We are aware that some Partner Administrators may be experiencing a login loop when attempting to access the Administration Console. We are currently investigating this issue and will post further updates here as they become available.
29 days ago - at 06/18/2026 07:37PM
We are continuing to investigate the service disruption impacting Partner Administrators. Administrators are able to successfully log into the Partner Portal; however, when attempting to access customer Administration Consoles via the Partner Portal, they are being logged out.
Our engineering teams remain actively engaged in the investigation. Further updates will be posted here as they become available.
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