Admins' search parameters may be missing after performing a group search in the Exchange admin center

Title: Admins' search parameters may be missing after performing a group search in the Exchange admin center User impact: Admins' search parameters may have been missing after performing a group search in the Exchange admin center. More info: Specifically, the search terms were removed upon initiating group searches. Other searches didn't appear to be affected. Final status: Following our completed fix deployment, we've confirmed with affected admins that search parameters when conducting group searches in the Exchange Online admin center have been restored, and that the impact has been remediated. Scope of impact: Any admin who performed a group search in the Exchange admin center may have been affected. Start time: Tuesday, April 14, 2026, at 11:37 AM UTC End time: Wednesday, April 22, 2026, at 12:00 AM UTC Root cause: A recent service-side configuration change contained a code issue that prevented the search parameters from populating after performing a group search in the Exchange admin center. Next steps: We're further analyzing the offending configuration change to find ways to improve our pre-deployment testing and validation processes and to prevent similar problems in the future. This is the final update for the event.

Title: Admins' search parameters may be missing after performing a group search in the Exchange admin center User impact: Admins' search parameters may be missing after performing a group search in the Exchange admin center. More info: Specifically, the search terms are removed upon initiating a group searches. Other searches don't appear to be affected. Current status: We're continuing to monitor the progress of our fix deployment and are monitoring whether it remediates the impact as expected. Scope of impact: Any admin performing a group search in the Exchange admin center may be affected. This information may be updated as our investigation continues. Root cause: A recent service-side configuration change contains a code issue that's preventing the search parameters from populating after performing a group search in the Exchange admin center. Next update time: Tuesday, April 28, 2026, at 8:00 PM UTC

Title: Admins' search parameters may be missing after performing a group search in the Exchange admin center User impact: Admins' search parameters may be missing after performing a group search in the Exchange admin center. More info: Specifically, the search terms are removed upon initiating a group searches. Other searches don't appear to be affected. Current status: Our monitoring of the fix saturation to the remaining impacted environments is ongoing as we validate impact remediation for all affected users. Scope of impact: Any admin performing a group search in the Exchange admin center may be affected. This information may be updated as our investigation continues. Root cause: A recent service-side configuration change contains a code issue that's preventing the search parameters from populating after performing a group search in the Exchange admin center. Next update by: Monday, April 27, 2026, at 11:30 PM UTC

Title: Admins' search parameters may be missing after performing a group search in the Exchange admin center User impact: Admins' search parameters may be missing after performing a group search in the Exchange admin center. More info: Specifically, the search terms are removed upon initiating a group searches. Other searches don't appear to be affected. Current status: We're continuing to monitor the saturation of our fix to the remaining impacted environments in order to ensure mitigation for all impacted users. Scope of impact: Any admin performing a group search in the Exchange admin center may be affected. This information may be updated as our investigation continues. Root cause: A recent service-side configuration change contains a code issue that's preventing the search parameters from populating after performing a group search in the Exchange admin center. Next update by: Monday, April 27, 2026, at 5:00 PM UTC

Title: Admins' search parameters may be missing after performing a group search in the Exchange admin center User impact: Admins' search parameters may be missing after performing a group search in the Exchange admin center. More info: Specifically, the search terms are removed upon initiating a group searches. Other searches don't appear to be affected. Current status: Our fix had completed its deployment to a portion of the affected environments. We're monitoring its ongoing deployment to the remaining impacted environments in order to confirm mitigation for all impacted users. Scope of impact: Any admin performing a group search in the Exchange admin center may be affected. This information may be updated as our investigation continues. Root cause: A recent service-side configuration change contains a code issue that's preventing the search parameters from populating after performing a group search in the Exchange admin center. Next update by: Friday, April 24, 2026, at 1:30 AM UTC

Title: Admins' search parameters may be missing after performing a group search in the Exchange admin center User impact: Admins' search parameters may be missing after performing a group search in the Exchange admin center. More info: Specifically, the search terms are removed upon initiating a group searches. Other searches don't appear to be affected. Current status: We've validated the fix in our internal testing environment and are monitoring as it saturates the remaining impacted environments. We expect it may take several weeks for the deployment to complete, and we'll aim to provide an updated resolution timeline once available. Scope of impact: Any admin performing a group search in the Exchange admin center may be affected. This information may be updated as our investigation continues. Root cause: A recent service-side configuration change contains a code issue that's preventing the search parameters from populating after performing a group search in the Exchange admin center . Next update by: Wednesday, April 22, 2026, at 9:30 PM UTC

Title: Admins' search parameters may be missing after performing a group search in the Exchange admin center User impact: Admins' search parameters may be missing after performing a group search in the Exchange admin center. More info: Specifically, the search terms are removed upon initiating a group searches. Other searches don't appear to be affected. Current status: Our analysis of the gathered logs has identified that a recent service-side configuration change contains an error, resulting in impact. We've developed a fix and are monitoring as it progresses. We'll provide a remediation timeline once one is available. Scope of impact: Any admin performing a group search in the Exchange admin center may be affected. This information may be updated as our investigation continues. Root cause: A recent service-side configuration change contains an error, resulting in impact. Next update by: Wednesday, April 15, 2026, at 9:30 PM UTC

Title: Admins' search parameters may be missing after performing a group search in the Exchange admin center User impact: Admins' search parameters may be missing after performing a group search in the Exchange admin center. More info: Specifically, the search terms are removed upon initiating a group searches. Other searches don't appear to be affected. Current status: We've successfully reproduced the issue internally and are reviewing gathered diagnostic data to better understand the underlying cause of impact and develop a remediation strategy. Scope of impact: Any admin performing a group search in the Exchange admin center may be affected. This information may be updated as our investigation continues. Next update by: Tuesday, April 14, 2026, at 9:30 PM UTC

Title: Admins' search parameters may be missing after performing a group search in the Exchange admin center User impact: Admins' search parameters may be missing after performing a group search in the Exchange admin center. More info: Specifically, the search terms are removed upon initiating a group searches. Other searches do not appear to be affected. Current status: We've received user reports that the search field is unexpectedly cleared upon performing a group search in the Exchange admin center. We're working to reproduce the issue internally and gather additional diagnostic data to progress the investigation. Scope of impact: Any admin performing a group search in the Exchange admin center may be affected. This information may be updated as our investigation continues. Next update by: Tuesday, April 14, 2026, at 6:00 PM UTC

Title: Admins' search parameters may be missing after performing a group search in the Exchange admin center User impact: Admins' search parameters may be missing after performing a group search in the Exchange admin center. More info: Specifically, the search terms are removed upon initiating a group searches. Other searches do not appear to be affected. Current status: We're investigating a potential issue with the Exchange admin center and checking for impact to your organization. We'll provide an update within 30 minutes.