Notice and disclaimer: Box is providing this preliminary information subject to further review and analysis. To the best of our knowledge, this is the current state and we may update as more information is confirmed.

On August 24, 2026 between 2:03 PM PDT and 2:24 PM PDT, some customers experienced degraded upload performance, elevated errors, and reduced availability for certain user operations.

The issue was caused by an internal background clean-up process that generated an unexpectedly high volume of requests and overloaded part of our back-end system. We applied an immediate mitigation to stop the offending traffic, and service levels returned to normal within minutes. We are reviewing the recent changes and retry behavior that contributed to this event and are working to prevent recurrence.

We are conducting a full engineering postmortem and our overview is subject to change with further analysis and findings. In the event our continuing investigation yields further substantive findings, we may publish additional analysis after the conclusion of the full engineering postmortem.

We are continuously working to improve Box and want to make sure we are delivering the best product and user experience we can. We hope we have provided some clarity here and we would be happy to answer any questions you may still have regarding this matter.

Sincerely,

The Box Team