Migrate Azure general-purpose v1 (GPv1) storage accounts to general-purpose v2 (GPv2) before 13 October 2026

Question

I received this email today:

Migrate Azure general-purpose v1 (GPv1) storage accounts to general-purpose v2 (GPv2) before 13 October 2026

I found the culprit but I have absolutely no idea what that "storage account" (named group1diag673) is doing. From the diagnostics page, it seems to have 4 to 6 transactions per day (but only from 1st September which does not make sense as I have been here for years with a stable environment).

The only thing I have is 2 Windows VMs and I just don't want them to be affected.

Will I get a warning message if I try to delete it and it's not advisable?

Thanks!

Nic.

PS: This has been said before, but this is way too complicated.

PS2: is there a general tool to see what is unused and therefore can be safely deleted?

Answer 1

Hello @NG,

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

I understand your question regarding migrating Azure general-purpose v1 (GPv1) storage accounts to general-purpose v2 (GPv2) before October 13, 2026.

The storage account is likely associated with boot diagnostics or guest OS diagnostics for one of your VMs. Azure often creates these automatically when you set up a VM, which could explain the small number of daily transactions you’re noticing.

If you delete it without reviewing, there won’t be a warning message, but you will lose access to your VM diagnostics data, such as screenshots and logs. This won’t affect your VMs running, but it could make troubleshooting more difficult if problems occur.

The best approach is to upgrade the account from GPv1 to GPv2 in place. This process is non-disruptive, and your VMs will keep running as usual.

Verify whether this storage account is currently linked.

·       Go to each VM → Diagnostics settings (Boot diagnostics & Guest OS diagnostics).

·       Confirm whether group1diag673 is listed.

·       If yes, either leave it as-is or switch diagnostics to another GPv2 account.

Update the current account to GPv2:

·       In the Azure Portal, go to Storage account → Configuration → Upgrade → Select GPv2.

·       No downtime or data loss will occur.

Tools for cleanup:

·       Use Azure Advisor and Cost Analysis for unused resources.

·       For storage specifically, Storage Insights can help identify idle accounts.

This is the reference document for the upgrade.: Upgrade to a general-purpose v2 storage account - Azure Storage | Microsoft Learn

Note: Upgrade group1diag673 to GPv2 rather than deleting it. If you later confirm it’s not being used, you can remove it safely.

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

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Answer 2

Bonjour,

Sur ce forum on utilise la langue Française. Si ça vous dérange allez sur le Forum U.S.

Bonne continuation.

La modération.

Daniel