Users may be unable to schedule Outlook calendar meetings or appointments from Microsoft 365 Copilot Chat

Title: Users may be unable to schedule Outlook calendar meetings or appointments from Microsoft 365 Copilot Chat

User impact: Users may have been unable to schedule Outlook calendar meetings or appointments from Copilot Chat.

More info: When users prompted Copilot Chat to schedule an Outlook calendar meeting or appointment, the meeting or appointment may not have been created, and Copilot Chat provided an error that stated, "I ran into an issue while trying to finalize the meeting booking - it didn't go through due to a system error."

Final status: We've confirmed that our fix to correct the confirmation card manifest issue has been completed, and after monitoring service health telemetry to ensure the associated failures have ceased, we've verified the impact is remediated.

Scope of impact: Any user prompting Copilot Chat to schedule an Outlook calendar meeting or appointment may have been impacted. This information may be updated as our investigation continues.

Start time: Thursday, June 04, 2026, at 6:29 AM UTC

End time: Thursday, June 11, 2026, at 6:00 AM UTC

Root cause: A recent service change, designed to update the confirmation card provided by Copilot Chat when scheduling Outlook calendar meetings or appointments, was introduced before the previous confirmation card manifest was totally removed, which resulted in impact.

Next steps:
- We're reviewing our confirmation card manifest update processes to ensure all necessary steps are taken before future updates to prevent this from reoccurring.

This is the final update for the event.

Title: Users may be unable to schedule Outlook calendar meetings or appointments from Microsoft 365 Copilot Chat

User impact: Users may be unable to schedule Outlook calendar meetings or appointments from Copilot Chat.

More info: When users prompt Copilot Chat to schedule an Outlook calendar meeting or appointment, the meeting or appointment may not be created, and Copilot Chat provides an error that states, "I ran into an issue while trying to finalize the meeting booking - it didn't go through due to a system error."

Current status: Our deployment has been re-enabled after we paused it to develop a new version to prevent any downstream impact from occurring. We anticipate this version of the fix to address the issue introduced by the recent service change will complete deployment and remediate the impact by the time of our next scheduled update.

Scope of impact: Any user prompting Copilot Chat to schedule an Outlook calendar meeting or appointment may be impacted. This information may be updated as our investigation continues.

Start time: Thursday, June 04, 2026, at 6:29 AM UTC

Root cause: A recent service change designed to update the confirmation card provided by Copilot Chat when scheduling Outlook calendar meetings or appointments is resulting in impact.

Next update by: Thursday, June 11, 2026, at 6:00 PM UTC

Title: Users may be unable to schedule Outlook calendar meetings or appointments from Microsoft 365 Copilot Chat

User impact: Users may be unable to schedule Outlook calendar meetings or appointments from Copilot Chat.

More info: When users prompt Copilot Chat to schedule an Outlook calendar meeting or appointment, the meeting or appointment may not be created, and Copilot Chat provides an error that states, "I ran into an issue while trying to finalize the meeting booking - it didn't go through due to a system error."

Current status: After further review, we've confirmed that due to the deployment of our fix resulting in downstream impact to an unrelated escalation we need to pause our current fix deployment and develop and validate a new version for deployment. We aim to provide a timeline for redeployment in our next scheduled update.

Scope of impact: Any user prompting Copilot Chat to schedule an Outlook calendar meeting or appointment may be impacted. This information may be updated as our investigation continues.

Start time: Thursday, June 04, 2026, at 6:29 AM UTC

Root cause: A recent service change designed to update the confirmation card provided by Copilot Chat when scheduling Outlook calendar meetings or appointments is resulting in impact.

Next update by: Wednesday, June 10, 2026, at 11:00 PM UTC

Title: Users may be unable to schedule Outlook calendar meetings or appointments from Microsoft 365 Copilot Chat

User impact: Users may be unable to schedule Outlook calendar meetings or appointments from Copilot Chat.

More info: When users prompt Copilot Chat to schedule an Outlook calendar meeting or appointment, the meeting or appointment may not be created, and Copilot Chat provides an error that states, "I ran into an issue while trying to finalize the meeting booking - it didn't go through due to a system error."

Current status: The deployment of the fix is underway and we're monitoring the saturation progress to validate that it remediates impact as anticipated.

Scope of impact: Any user prompting Copilot Chat to schedule an Outlook calendar meeting or appointment may be impacted. This information may be updated as our investigation continues.

Start time: Thursday, June 04, 2026, at 6:29 AM UTC

Root cause: A recent service change designed to update the confirmation card provided by Copilot Chat when scheduling Outlook calendar meetings or appointments is resulting in impact.

Next update by: Wednesday, June 10, 2026, at 6:00 PM UTC

Title: Users may be unable to schedule Outlook calendar meetings or appointments from Microsoft 365 Copilot Chat

User impact: Users may be unable to schedule Outlook calendar meetings or appointments from Copilot Chat.

More info: When users prompt Copilot Chat to schedule an Outlook calendar meeting or appointment, the meeting or appointment may not be created, and Copilot Chat provides an error that states, "I ran into an issue while trying to finalize the meeting booking - it didn't go through due to a system error."

Current status: We've placed our fully validated fix to revert the offending change in queue for deployment. Once deployed, we'll monitor saturation progress and will provide a timeline for its completion and subsequent impact remediation as one becomes available.

Scope of impact: Any user prompting Copilot Chat to schedule an Outlook calendar meeting or appointment may be impacted. This information may be updated as our investigation continues.

Start time: Thursday, June 04, 2026, at 6:29 AM UTC

Root cause: A recent service change designed to update the confirmation card provided by Copilot Chat when scheduling Outlook calendar meetings or appointments is resulting in impact.

Next update by: Wednesday, June 10, 2026, at 1:00 AM UTC

Title: Users may be unable to schedule Outlook calendar meetings or appointments from Microsoft 365 Copilot Chat

User impact: Users may be unable to schedule Outlook calendar meetings or appointments from Copilot Chat.

More info: When users prompt Copilot Chat to schedule a meeting or appointment, the meeting or appointment may not be created, and Copilot Chat provides an error that states, "I ran into an issue while trying to finalize the meeting booking - it didn't go through due to a system error."

Current status: We're continuing to validate and test the effectiveness of our fix to revert the offending change, and more time is needed to ensure all validations are complete before we start the reversion process.

Scope of impact: Any user prompting Copilot Chat to schedule a meeting or appointment may be impacted. This information may be updated as our investigation continues.

Start time: Thursday, June 04, 2026, at 6:29 AM UTC

Root cause: A recent service change designed to update the confirmation card provided by Copilot Chat when scheduling meetings or appointments is causing impact.

Next update by: Tuesday, June 09, 2026, at 5:30 PM UTC

Title: Users may be unable to schedule Outlook calendar meetings or appointments from Microsoft 365 Copilot Chat

User impact: Users may be unable to schedule Outlook calendar meetings or appointments from Copilot Chat.

More info: When users prompt Copilot Chat to schedule a meeting or appointment, the meeting or appointment may not be created, and Copilot Chat provides an error that states, "I ran into an issue while trying to finalize the meeting booking - it didn't go through due to a system error."

Current status: We're validating the efficacy of a fix designed to reverse the offending change and will provide a timeline for the completion of our validations as one becomes available.

Scope of impact: Any user prompting Copilot Chat to schedule a meeting or appointment may be impacted. This information may be updated as our investigation continues.

Start time: Thursday, June 04, 2026, at 6:29 AM UTC

Root cause: A recent service change designed to update the confirmation card provided by Copilot Chat when scheduling meetings or appointments is causing impact.

Next update by: Tuesday, June 09, 2026, at 1:00 AM UTC

Title: Users may be unable to schedule Outlook calendar meetings or appointments from Microsoft 365 Copilot Chat

User impact: Users may be unable to schedule Outlook calendar meetings or appointments from Copilot Chat.

More info: When users prompt Copilot Chat to schedule a meeting or appointment, the meeting or appointment may not be created.

Current status: We've identified a recent service change designed to update the confirmation card provided by Copilot Chat when scheduling meetings or appointments is causing impact. We're reversing this change to remediate the impact.

Scope of impact: Any user prompting Copilot Chat to schedule a meeting or appointment may be impacted. This information may be updated as our investigation continues.

Root cause: A recent service change designed to update the confirmation card provided by Copilot Chat when scheduling meetings or appointments is causing impact.

Next update by: Monday, June 08, 2026, at 9:30 PM UTC

Title: We're looking into a potential problem impacting Microsoft 365 Copilot Chat

User impact: We're checking for potential impact to your users.

Current status: We're investigating a potential issue impacting Microsoft 365 Copilot Chat and checking for impact to your organization. We'll provide an update within 30 minutes.