Artifact Signing: Identity validation failed — Unable to determine cause of failure

Problem description

I am experiencing an issue with identity validation in the Artifact Signing service. The validation process initiated on September 4, 2026, is marked as 'Failed' in the portal, but no error code or descriptive message is provided. I need assistance in understanding why the validation failed and how to resolve it.

Environment

Service: Artifact Signing; Resource type: Microsoft.CodeSigning; Region: not specified in the case information.

What I've already tried

I have viewed the validation status in the Azure portal and confirmed it shows 'Failed' without additional details. I searched for diagnostic logs or error messages related to the validation attempt; none were available. I opened a support case, but the initial response indicated that no backend logs or data could be found for the attempt. No self-help steps such as reviewing submitted documents or validation request ID were documented in the case.

Current status

My current status is that the identity validation remains in a failed state without insight into the cause. I am seeking assistance in retrieving detailed validation failure reasons from backend logs, including any specific issues related to submitted details or domain verification, to proceed with correcting the validation process.