Azure AI Video Indexer "No available resources on the subscription" despite active Azure OpenAI resource and active deployments

Environment

Subscription:

MCPP Subscription

Video Indexer:

• Resource: mldbc-video-indexer
• Region: East US

Azure OpenAI:

• Resource: mldbc-openai
• Region: East US
• Status: Active

Azure AI Foundry:

• Resource: mldbc-foundry
• Region: East US

Active Azure OpenAI Deployments:

• gpt-5.4 (Global Batch)
• gpt-5.4-mini (Data Zone Standard)

Issue

I am attempting to enable Azure AI Video Indexer Textual Summarization.

From Azure Portal:

mldbc-video-indexer

→ Azure OpenAI (connect)

The connection dialog displays:

"No available resources on the subscription"

Expected Result

The Azure OpenAI resource "mldbc-openai" should appear in the resource picker and be available for selection.

Actual Result

Video Indexer reports:

"No available resources on the subscription"

even though an Azure OpenAI resource exists and has active model deployments.

Troubleshooting Already Performed

• Created Azure AI Foundry resource: mldbc-foundry
• Created Azure OpenAI resource: mldbc-openai
• Verified Azure OpenAI resource is Active
• Verified Azure OpenAI resource is in East US
• Verified Video Indexer resource is in East US
• Created deployment:
• gpt-5.4
• Created deployment:
• gpt-5.4-mini (Data Zone Standard)
• Verified deployments are operational in Azure OpenAI Chat Playground
• Verified deployments are visible and active
• Refreshed Azure Portal
• Reopened Azure OpenAI connection dialog multiple times

Question

Are there additional requirements for Azure AI Video Indexer to discover Azure OpenAI resources?

Examples:

• specific deployment types
• supported model families
• content filters
• RBAC permissions
• managed identity assignments
• propagation delays
• Azure OpenAI configuration requirements

Please advise why Video Indexer cannot discover the Azure OpenAI resource despite the Azure OpenAI resource and deployments being active.

Screenshots available upon request.

Evidence collected includes:

1. Azure OpenAI resource overview showing:

• mldbc-openai
• Status: Active
• Region: East US

2. Azure AI Video Indexer overview showing:

• mldbc-video-indexer

3. Azure AI Video Indexer Azure OpenAI (connect) dialog showing:

• "No available resources on the subscription"

4. Azure OpenAI deployment screenshots showing:

• gpt-5.4
• gpt-5.4-mini
• Deployment active in Chat Playground

5. Azure OpenAI deployment configuration screenshots showing:

• Data Zone Standard deployment
• Active deployment status

I can provide screenshots immediately if a moderator or Microsoft engineer requests them.