Outage in Mimecast
TTP URL and Browser Isolation Errors on US and USB Grids
Resolved Minor
May 19, 2026 - Started 6 days ago
- Lasted about 1 hour
Incident Report
Summary AI Generated
Mimecast customers on the US and USB grids experienced issues accessing rewritten links that were being redirected through Browser Isolation, resulting in errors when trying to access URLs. The incident affected the United States Grid and United States B Grid components while other Mimecast services continued operating normally. The issue was resolved after 1.1 hours.
We are aware that some customers hosted on our US and USB grids may be experiencing issues accessing rewritten links, where URLs are being redirected through Browser Isolation and may result in an error.
We are currently investigating this issue and will post updates here as they become available. All other Mimecast services are operating as normal.
We are currently investigating this issue and will post updates here as they become available. All other Mimecast services are operating as normal.
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Latest Updates ( sorted recent to last )
6 days ago - at 05/19/2026 01:59PM
We are aware that some customers hosted on our US and USB grids may be experiencing issues accessing rewritten links, where URLs are being redirected through Browser Isolation and may result in an error.
We are currently investigating this issue and will post updates here as they become available. All other Mimecast services are operating as normal.
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