Error 715-123420 on every model deployment (Anthropic and Azure OpenAI), new pay-as-you-go subscription, support cases bounced twice

Skene Bennellick 0 Reputation points
2026-10-08T22:58:09.8533333+00:00

Since 22 September 2026 every model deployment on a new pay-as-you-go subscription fails with error 715-123420 ("Our system has detected this request as unusual activity for your account. If you are confident this is in error, please contact support").

What we have checked

  • Fails for Anthropic claude-opus-5 and claude-sonnet-5 (Foundry, GlobalStandard, East US 2 and West US 3) and for Azure OpenAI gpt-5.4-mini (GlobalStandard), so it is not model- or Marketplace-specific.
  • Fails from the portal and from the CLI (az cognitiveservices account deployment create), and for two different users (an Owner and a Contributor), so the block is at subscription level.
  • Quota is available and the Anthropic terms are accepted.
  • We have not deleted or recreated the Foundry resource.

Identifiers

  • Subscription ID: 5fc71ede-9374-428b-babe-473b9cf5706b
  • Foundry resource ID: /subscriptions/5fc71ede-9374-428b-babe-473b9cf5706b/resourceGroups/rg-shane-3419/providers/Microsoft.CognitiveServices/accounts/shane-6742-resource (West US 3)

Support requests so far

  • 2609220030001011: closed 29 Sep as a technical misroute, told to buy a Technical support plan.
  • 2609290030005588: Billing & Subscription Management replied 6 Oct that it is outside their scope and referred me to this forum.

The subscription has no paid support plan.

The owner is JC Logistics Limited (trading as Veridion Group), a New Zealand company, using the subscription for an internal logistics application.

Could a moderator please route this to the backend fraud protection team for review, as was done in question 5947131? Happy to provide any verification by private message.

Microsoft Foundry
Microsoft Foundry

A unified Azure platform for creating and managing AI models, agents, and applications with built‑in enterprise security, monitoring, and governance

0 comments

1 answer

Sort by: Most helpful
Most helpful Newest Oldest
  1. Divyesh Govaerdhanan 11,890 Reputation points MVP Volunteer Moderator
    2026-10-10T18:00:17.1633333+00:00

    HI Skene Bennellick,

    Welcome to Microsoft Q&A,

    Thanks for the detailed write-up. Error 715-123420 is consistent with a platform-level block from Azure’s fraud protection checks. It is applied before the request reaches model provisioning. That fits what you tested: it fails across models, regions, portal and CLI, and for both users. Only the backend team can review and release it, so nothing on your side will clear it.

    I have escalated this thread for backend review. Meanwhile:

    1. Please don’t delete or recreate the Foundry resource, and avoid repeated retries.
    2. Watch for a private message and reply there with any verification details requested, not on this public thread.
    3. Once the team confirms the block is cleared, retry the deployment after 1 to 2 hours. If it still fails, wait 24 hours and try again.

    Please click Accept Answer and upvote if this helped.

    Was this answer helpful?

    0 comments

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.