Users may have seen blank pages when opening Microsoft Bookings

Title: Users may have seen blank pages when opening Microsoft Bookings User impact: Users may have seen blank pages when opening Microsoft Bookings. Final status: We've determined that Bookings APIs were getting timed out because of repeated deprecated KV cache look-ups after a change was enabled for deprecation of the KV cache. We've deployed a fix and confirmed with a sample of affected users that impact has been remediated. Scope of impact: Any user may have seen blank pages when opening Microsoft Bookings. Start time: Wednesday, August 26, 2026, at 4:00 AM UTC End time: Thursday, August 27, 2026, at 10:30 AM UTC Root cause: Bookings APIs were getting timed out because of repeated deprecated KV cache look-ups after a change was enabled for deprecation of the KV cache. Next steps: We’re reviewing our KV cache change procedures to help prevent the issue from reoccurring. This is the final update for the event.

Title: Users may see blank pages when opening Microsoft Bookings User impact: Users may see blank pages when opening Microsoft Bookings. Current status: Our review of the HAR network trace logs and the service health telemetry indicate that this issue is self-resolving. Subsequently, we’re reaching out to a subset of affected users to provide a reproduction of impact to determine this issue is still occurring while we continue working to determine the underlying cause of impact. Scope of impact: Any user may see blank pages when opening Microsoft Bookings. This information may be updated as our investigation continues. Next update by: Thursday, August 27, 2026, at 2:30 PM UTC

Title: Users may see blank pages when opening Microsoft Bookings User impact: Users may see blank pages when opening Microsoft Bookings. Current status: We've received additional user feedback indicating that users may be unable to open the Microsoft Bookings portal page and that other Bookings links may not load. While we continue to assess internal telemetry and user feedback to confirm the scope of the impacted scenarios, we're reaching out to a subset of impacted users to gather additional HTTP Archive format (HAR) network trace logs that we're anticipating can help us gain insight into the underlying source of impact and inform our next steps. Scope of impact: Any user may see blank pages when opening Microsoft Bookings. This information may be updated as our investigation continues. Next update by: Thursday, August 27, 2026, at 6:30 AM UTC

Title: Users may see blank pages when opening Microsoft Bookings User impact: Users may see blank pages when opening Microsoft Bookings. Current status: We suspect that the issue facing your organization is connected to an ongoing service incident with Microsoft Bookings, however we need an additional HTTP Archive format (HAR) trace from your organization in order to confirm that this is the case. We've reached out to your representatives to collect this HAR trace so that we can determine the most effective next steps to resolve this issue. Scope of impact: Any user may see blank pages when opening Microsoft Bookings. This information may be updated as our investigation continues. Next update by: Thursday, August 27, 2026, at 4:00 AM UTC