A service disruption occurred in Gmail from October 18, 2024, 18:30 UTC to October 20, 2024, 00:15 UTC. The incident lasted for 1 day, 5 hours, 45 minutes, and affected the Gmail application for iOS globally. The issue caused an elevated crash rate, resulting in approximately 1 million users experiencing foreground crashes when starting the application. The root cause of the issue was two changes to identity endpoints used by Gmail iOS, which caused the application to crash. A full incident report will be completed in the following days to provide a detailed root cause analysis. The impact was limited to the Gmail application for iOS, and users did not experience errors when using Gmail on other platforms, including Android and web interfaces. The incident did not affect Gmail services on other platforms. Google apologizes for the inconvenience caused and encourages users to reach out to Google Workspace Support if they experienced any impact outside of what is listed. The incident start and end times in US/Pacific time zone were October 18, 2024, 11:30, and October 19, 2024, 17:15, respectively. Users can report any additional issues using the help article https://support.google.com/a/answer/1047213.