Planned maintenance: Cloud Voicemail is migrating to a new infrastructure
ID	Workload	Category	Classification	Severity	Start Time	Last Updated
MC1137595	Exchange Online Microsoft Teams	Prevent or Fix Issue	User impact Admin impact	normal	18-Aug-2025 18:56	18-Aug-2025 18:57
Update: 18-Aug-2025 18:57 Planned maintenance: Cloud voicemail We would like to inform you that the Microsoft cloud voicemail service is now migrating to a new infrastructure. As part of this transition, tenants who have allowlisted specific IP addresses for Cloud Voicemail and blocked all other IP addresses may experience exceptions in service connectivity. If you encounter any issues or exceptions related to this migration, please open a support ticket with Microsoft for prompt assistance. When this will happen Migration began in mid-August 2025 and is projected to be completed by late September 2025. How this will affect you organization As part of this planned maintenance, Tenants who have allowlisted specific IP addresses for Cloud Voicemail and blocked all other IP addresses may experience exceptions in service connectivity.