Target Engenharia e Consultoria Ltda

Title: Users may be unable to reply or reply-all to email messages sent to Microsoft 365 groups in Exchange Online User impact: Users may be unable to reply or reply-all to email messages sent to Microsoft 365 groups in Exchange Online. More info: As a temporary alternative, impacted users may reply or reply all to email messages through user inboxes. Current status: We've initialized our fix deployment to the affected environment and anticipate the impact should be fully remediated by our next scheduled update. Scope of impact: This issue impacts any user attempting to reply or reply-all to email messages sent to Microsoft 365 groups in Exchange Online. This information may be updated as our investigation continues. Next update by: Tuesday, October 6, 2026, at 1:00 AM UTC