Mimecast incident

Degraded service impacting Partner Administration Console access

Minor Resolved View vendor source →

Mimecast experienced a minor incident on June 18, 2026 affecting United States Grid and United States B Grid and 1 more component, lasting 4h 53m. The incident has been resolved; the full update timeline is below.

Started
Jun 18, 2026, 04:09 PM UTC
Resolved
Jun 18, 2026, 09:02 PM UTC
Duration
4h 53m
Detected by Pingoru
Jun 18, 2026, 04:09 PM UTC

Affected components

United States GridUnited States B GridUnited Kingdom GridSouth African GridAustralian GridGerman GridCanadian GridOffshore GridOffshore Grid (Administration Console)

Update timeline

  1. investigating Jun 18, 2026, 04:09 PM UTC

    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.

  2. investigating Jun 18, 2026, 07:37 PM UTC

    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.

  3. monitoring Jun 18, 2026, 08:18 PM UTC

    We have taken mitigation steps and believe we have resolved the issue impacting access to the Administration Console via the Partner Portal globally. All services should now be functioning normally. Our Engineering team will continue to closely monitor application availability and performance. We will provide further updates here if necessary.