Will Basic SKU Public IPs attached to VMs stop working after September 30, 2025?

Jayden Ireland 20 Reputation points
2025-09-16T13:05:07.16+00:00

We currently have some Public IPs using the Basic SKU in Azure.

I’ve read that Microsoft plans to retire Basic SKU Public IP addresses on September 30, 2025.

I’d like to confirm:

  • Will Basic SKU IPs stop working entirely after September 30, 2025, even if they’re in active use?
  • Is there any grace period or fallback behavior if they aren’t upgraded by that date?
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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  1. TP 146.5K Reputation points Volunteer Moderator
    2025-09-16T13:44:20.0466667+00:00

    Hi Jayden,

    There is no official statement regarding precisely what will happen after the deadline, however, they say right in the official notice to avoid potential service disruption you need to upgrade before the deadline. The process doesn't take long per VM, even if done manually via portal.

    Below are instructions for upgrading the Basic SKU Dynamic Public IP associated to VM interface. You'll want to schedule this during off hours since there will be brief interruption of network traffic.

    In my experience the Public IP address is retained if you switch to Static first. There should be no need to update DNS records. Process only takes a couple of minutes.

    1. Please navigate to the Basic Public IP address -- Settings -- Configuration, select Static, click Save.

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    After several seconds you should see notification in upper right corner saying that it saved public IP changes.

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    A message will show up at top saying that "This public IP address can't be updated because it is associated to the IP configuration..", that's normal.

    2. Click on Overview blade on left, next click on Properties tab and verify it still says Static. Hit F5 to refresh the page, and double-check Properties tab again (still should say Static).

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    3. Now you are ready to click Dissociate, make note of your VM's network interface name, then click Yes to confirm. Network activity from public Internet to your VM will be interrupted at this point.

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    4. Once that's done click the Upgrade to Standard SKU link at top, check box and Yes. Typically only takes seconds to upgrade, look for notification in upper right.

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    5. When upgrade has finished, click Associate , select Resource type: Network interface and select your VM's network interface from the dropdown, and click OK. This is where the note you made above with your VM's network interface name will be helpful.

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

    Thanks.

    -TP

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  1. Thanmayi Godithi 3,015 Reputation points Microsoft External Staff Moderator
    2025-09-16T13:37:56.55+00:00

    Hi @Jayden Ireland,

    Thank you for reaching out with your question regarding the retirement of Basic SKU Public IP addresses in Azure.

    Microsoft has officially announced that Basic SKU Public IPs will be retired on September 30, 2025.

    Basic SKU Public IPs will stop working after the retirement date, regardless of whether they are actively in use. Microsoft will deallocate these IPs, and any services relying on them will experience connectivity loss unless upgraded to Standard SKU.

    Also, about your second question on fallback behaviour:

    There is no grace period or fallback mechanism after September 30, 2025. However, the impact depends on the resource type the IP is attached to.

    Microsoft has provided detailed guidance based on resource types:

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    Note: Azure Cloud Services (Extended Support) are not impacted by this retirement.

    We recommend reviewing your current Basic SKU IPs and identifying the associated resources. Based on that, follow the appropriate upgrade or migration path to ensure uninterrupted service.

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

    Please "Accept the answer" if the information helped you. This will help us and others in the community as well.

    1 person found this answer helpful.
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