[Medium] Issues with Box Notes

Final update

We recently addressed issues affecting Box Notes in Box. We would like to take the opportunity to further explain these issues and the steps we have taken to keep them from happening in the future. On September 28, 2026, beginning at 2:35 AM PDT, during a routine maintenance operation, some Box Notes users who had the app open in a background browser tab may have seen a brief "Reconnecting" message and a short delay when they returned to the tab. No data was lost, users who were actively editing were not prevented from working, and we received no widespread customer reports. The cause was a recent change to how Box Notes reconnects background tabs. We have since fixed the reconnection behavior and verified the fix. # Analysis The cause was a recent change to how Box Notes reconnects browser tabs that are open in the background. After an infrastructure switch during a release, those tabs did not reconnect on their own and instead reconnected when customers returned to them. The release and infrastructure switch completed successfully, and background tabs reconnected gradually as customers came back to them. Normal connection levels returned by 3:33 AM PDT. # Corrective Actions Box

1. Postmortem · Oct 21, 19:02 UTC
   We recently addressed issues affecting Box Notes in Box. We would like to take the opportunity to further explain these issues and the steps we have taken to keep them from happening in the future. On September 28, 2026, beginning at 2:35 AM PDT, during a routine maintenance operation, some Box Notes users who had the app open in a background browser tab may have seen a brief "Reconnecting" message and a short delay when they returned to the tab. No data was lost, users who were actively editing were not prevented from working, and we received no widespread customer reports. The cause was a recent change to how Box Notes reconnects background tabs. We have since fixed the reconnection behavior and verified the fix. # Analysis The cause was a recent change to how Box Notes reconnects browser tabs that are open in the background. After an infrastructure switch during a release, those tabs did not reconnect on their own and instead reconnected when customers returned to them. The release and infrastructure switch completed successfully, and background tabs reconnected gradually as customers came back to them. Normal connection levels returned by 3:33 AM PDT. # Corrective Actions Box has initiated the following corrective actions: * Fixing the reconnection behavior for background tabs so they reconnect automatically after an infrastructure switch, and verifying the fix with a controlled switch. * Adding an automated test that reproduces this scenario, to catch any regression bef
2. Resolved · Sep 28, 10:31 UTC
   After further monitoring, this incident is now considered resolved. The Box Note service has been restored to full functionality. If you continue to experience any issues, please contact Box Support at https://support.box.com.
3. Investigating · Sep 28, 10:04 UTC
   Our team is investigating an issue with Box Notes. Users may see errors or slowness when creating or updating Box Notes. We will provide additional information as it becomes available.