Transition to a new method of internet access for your VMs in Azure

Sheik Mohamed Yasar 470 Reputation points
2026-03-18T06:10:24.8933333+00:00

Hi,

I have an existing VNet with 3 VMs deployed in it. Will this change impact the outbound internet connectivity of the existing VMs?

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Azure Virtual Network
Azure Virtual Network

An Azure networking service that is used to provision private networks and optionally to connect to on-premises datacenters.

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Answer accepted by question author
Ravi Varma Mudduluru 12,540 Reputation points Microsoft External Staff Moderator
2026-03-18T06:35:20.5033333+00:00

Hello @ Sheik Mohamed Yasar,

Thanks for reaching out to Microsoft Q&A.

This change won’t break your existing VMs’ Internet connectivity.

By design, Azure doesn’t retroactively remove the default outbound IP from already-deployed VNets or VMs. That means:

• Your 3 running VMs and any new VMs you spin up in that same VNet will continue to get default outbound IPs unless you explicitly make their subnet “private” (defaultOutboundAccess=false) or attach an explicit outbound solution (NAT Gateway, public IP, Load Balancer outbound rule, etc.).

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• Nothing happens automatically to existing VMs you only lose that implicit outbound path if and when you manually switch the subnet to private (and then stop/deallocate the VMs so the change can take effect).

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Answer recommended by moderator
TP 162.1K Reputation points Volunteer Moderator
2026-03-18T06:41:09.5666667+00:00

Hi,

Your existing VNet with 3 VMs will not be affected by the change. If the VMs are using Default Outbound Access now it will still work after March 31st.

In the various official announcements, articles, etc., they have consistently said existing VNets/VMs will not be changed, and thus still able to use Default Outbound Access.

Please click Accept Answer and upvote if the above was helpful.

Thanks.

-TP

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