[Critical] Issues with Multiple Box Services

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 November 10, 2025 between 5:00 pm PST and 5:26 pm PST, some users may have experienced slowness or temporary unavailability while working in Box. The issue occurred due to a sudden, large traffic spike on one database, which caused connection saturation on other databases, making them temporarily inaccessible. The issue was automatically resolved as our middleware service detected the problem and backed off. We are working on ways to prevent sudden traffic spikes from cascading to other systems and accelerating our middleware service’s auto-remediation process to prevent similar issues from occurring in the future.

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