How to setup Internet access after All Basic IPs be retired on September 30, 2025

Question

As subject, what can I do to maintain Internet access

Answer 1

Hello @Jason Ip,

Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.

I understand your question about the upcoming retirement of Basic SKU public IP addresses in Azure on September 30, 2025. To ensure continued internet access after this date, you’ll need to switch to explicit outbound connectivity methods. Here’s what you should know and consider:

Basic SKU Public IPs will be retired soon. You won’t be able to create new ones after March 31, 2025, and existing Basic IPs will be disabled after September 30, 2025.

Default outbound internet access for Azure VMs is also ending. Once this change takes effect, VMs will need configured outbound connectivity to access the internet.

What You Need to do:

Switch to Standard SKU Public Ips: Replace all Basic IPs with Standard SKU Public IPs, as they offer improved security, zone redundancy, and compatibility with services like NAT Gateway, Azure Firewall, and Standard Load Balancer. The migration process will differ based on whether the IPs are linked to VMs, Load Balancers, or VPN Gateways.

Set Up Explicit Outbound Connectivity: Select the approach that is most suitable for your situation:

1.      Azure NAT Gateway is recommended for better scalability and improved security.

2.      Standard Load Balancer with outbound rules helps manage traffic efficiently across multiple virtual machines.

3.      Direct Standard Public IP assigned to a VM NIC is a simpler option, though it may not scale well for larger setups.

Review Dependencies and Plan Migration:

1. Use Azure Resource Graph, CLI, or PowerShell to find all resources currently using Basic SKU IPs.
2. Check which whitelisting and dependencies are linked to these Basic IPs.
3. Start planning and testing the migration early to prevent any service interruptions as the retirement date nears.

Next Step: I suggest beginning an assessment of your environment now to identify any Basic IP dependencies. After that, you can plan the move to Standard SKU IPs and set up explicit outbound connectivity using the option that best fits your workload. How to upgrade:
Upgrade Basic Public IP Address to Standard SKU in Azure | Microsoft Learn

Important Azure Changes coming 30th September 2025 - What You Need to Know - MicroWarehouse

Kindly let us know if the above helps or you need further assistance on this issue.

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