Active – Networking degraded availability in East US

Impact Statement: Starting at 13:09 UTC on 18 March 2025, a subset of Azure customers in the East US region may experience intermittent connectivity loss and increased network latency sending traffic within as well as in and out of Azure's US East Region. Current Status: We identified multiple fiber cuts affecting a subset of datacenters in the East US region. The fiber cut impacted capacity to those datacenters increasing the utilization for the remaining capacity serving the affected datacenters. We have mitigated the impact of the fiber cut by load balancing traffic and restoring some of the impacted capacity. Impacted customers should now see their services recover. In parallel, we are working with our providers on fiber repairs. We do not yet have a reliable ETA for repairs at this time. We will continue to provide updates here as they become available.Please refer to tracking ID: Z_SZ-NV8 under Service Health blade within the Azure Portal for the latest information on this issue.