Assistance Required to Upgrade Basic SKU Public IP to Standard – Error Encountered

2025-07-31T11:35:13.6066667+00:00

As per the Azure notification regarding the retirement of Basic SKU Public IPs on 30th September, we are planning to upgrade two Basic SKU Public IPs that are each associated with a production VM.

When attempting to upgrade, we encounter the following error:

"Can't upgrade at this time. Your public IP is currently associated with a resource or has a dynamic allocation method. Please make sure that the public IP is not associated with a resource and has static allocation method before trying again."

To resolve this, we tried changing the IP allocation method from Dynamic to Static, but encountered this warning:

"This public IP address can't be updated because it is associated to the IP configuration 'ipconfig' in the network interface 'xxxxxx'."

We need guidance on how to upgrade the Basic SKU to Standard SKU with minimal or no impact on the VMs, as they are currently in production.

Can you please advise on the best approach to perform this upgrade safely?

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 131.6K Reputation points Volunteer Moderator
    2025-07-31T12:23:02.86+00:00

    Hi Jagadeesh,

    The errors you are seeing are normal. Please follow my instructions below.

    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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