Users may be unable to play migrated Stream videos in Microsoft Stream

Title: Users may be unable to play migrated Stream videos in Microsoft Stream

User impact: Users may be unable to play migrated Stream videos in Microsoft Stream.

More info: Users attempting to play impacted Stream videos will encounter the error message: "This browser or app can't play the video. Something might be outdated or supported. Try again using a different browser or app."

Current status: While we were in the process of identifying a comprehensive list of affected video files to repair, we confirmed that the window of impact spanned from Saturday, February 10, 2024, at 2:00 AM UTC to Saturday, February 17, 2024, at 5:00 AM UTC, and that video files migrated after this time aren't affected. We're continuing to develop a remediation strategy to repair previously affected video files and, after internal testing proves its efficacy, we'll aim to provide an estimated time to full resolution.

Scope of impact: Any user may be unable to play migrated Stream videos in Microsoft Stream.

Start time: Saturday, February 10, 2024, at 2:00 AM UTC

Preliminary root cause: A recent feature update, intended to enhance the reliability and stability of our service, contained a code regression that prevented migrated Stream videos from playing as expected during the outlined window of impact.

Next update by: Monday, February 26, 2024, at 11:30 PM UTC

Title: Users may be unable to play migrated Stream videos in Microsoft Stream

User impact: Users may be unable to play migrated Stream videos in Microsoft Stream.

More info: Users attempting play impacted Stream videos will encounter the error message: "This browser or app can't play the video. Something might be outdated or supported. Try again using a different browser or app."

Current Status: We’ve confirmed that Stream video files that migrated after the deployment of our fix on Wednesday, February 20, 2024, at 9:30 AM UTC, are not impacted. The remaining work is focused on restoring Stream video files that migrated during the impact window.

To address the remaining impact, we’re presently validating the effectiveness of a fix via testing in internal environments. Once this process is complete, we’ll deploy our solution across the affected environments to fully restore access to impacted Stream videos. In parallel, we’re scanning telemetry logs to gather a full list of impacted Stream video files to better target our fix.

Scope of impact: Any user may be unable to play migrated Stream videos in Microsoft Stream.

Preliminary root cause: A recent feature update that was intended to improve the process of the migration of files within Microsoft Stream contained a code regression that prevented migrated Stream videos from playing. We’ve addressed the underlying cause of impact and are now focused on restoring access to videos that were undergoing migration while the problematic regression was active.

Next update by: Thursday, February 22, 2024, at 11:30 PM UTC

Title: Users may be unable to play migrated Stream videos in Microsoft Stream

User impact: Users may be unable to play migrated Stream videos in Microsoft Stream.

Current status: We're developing a fix to scan for files that were migrated before the initial fix was deployed so we can fully mitigate the impact.

Scope of impact: Any user may be unable to play migrated Stream videos in Microsoft Stream.

Preliminary root cause: A recent feature update, intended to improve the process of the migration of the files within the Microsoft Stream, contains a code regression that's resulting in the inability to play Stream videos if they were migrated.

Next update by: Thursday, February 22, 2024, at 12:00 AM UTC

Title: Users may not be able to play migrated Stream videos in Microsoft Stream

User impact: Users may not be able to play migrated Stream videos in Microsoft Stream

Current status: We've identified that a recent feature update, intended to improve the process of the migration of the files within the Microsoft Stream, has inadvertently contained a code regression, resulting in impact. We've successfully applied a fix to repair the code, and expect that newly migrated videos should not be affected. In parallel, we're reviewing service telemetry to establish a fix for already migrated Stream videos to fully mitigate the impact.

Scope of impact: Any user may be unable to play migrated Stream videos in Microsoft Stream.

Root cause: A recent feature update, intended to improve the process of the migration of the files within the Microsoft Stream, has inadvertently contained a code regression, resulting in impact.

Next update by: Tuesday, February 20, 2024, at 7:30 PM UTC

Title: Users may not be able to play migrated Stream videos in Microsoft Stream

User impact: Users may not be able to play migrated Stream videos in Microsoft Stream.

Current status: We have been able to reproduce the issue internally and we're continuing to investigate the cause of impact to determine the proper mitigation strategy.

Scope of impact: Any user may be unable to play migrated Stream videos in Microsoft Stream.

Next update by: Tuesday, February 20, 2024, at 9:30 AM UTC

Title: Users may not be able to play migrated Stream videos in Microsoft Stream

User impact: Users may not be able to play migrated Stream videos in Microsoft Stream.

Current status: We are reviewing the attached logs and error messages to understand the cause of impact and develop our next troubleshooting steps.

Scope of impact: Any user may be unable to play migrated Stream videos in Microsoft Stream.

Next update by: Tuesday, February 20, 2024, at 7:30 AM UTC

Title: Users may not be able to play migrated Stream videos in Microsoft Stream

User impact: Users may not be able to play migrated Stream videos in Microsoft Stream.

Current status: We're investigating a potential issue and checking for impact to your organization. We'll provide an update within 30 minutes.