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Missing method when calling GetResponsesClient() on AzureOpenAIClient #20175
Description
Is there an existing issue for this?
- I have searched the existing issues
Describe the bug
sp.GetRequiredService<AzureOpenAIClient>().GetResponsesClient();results in
Unhandled exception. System.MissingMethodException: Method not found: 'Void OpenAI.Responses.ResponsesClient..ctor(System.ClientModel.Primitives.ClientPipeline, OpenAI.OpenAIClientOptions)'.
at Azure.AI.OpenAI.Responses.AzureResponsesClient..ctor(ClientPipeline pipeline, String deploymentName, Uri endpoint, AzureOpenAIClientOptions options)
at Azure.AI.OpenAI.AzureOpenAIClient.GetResponsesClient()
Expected Behavior
No response
Steps To Reproduce
Create an agent service using the following packages:
<PackageReference Include="Aspire.Azure.AI.OpenAI" />
<PackageReference Include="Microsoft.Agents.AI.A2A" />
<PackageReference Include="Microsoft.Agents.AI.Harness" />
<PackageReference Include="Microsoft.Agents.AI.Hosting.AGUI.AspNetCore" />
<PackageReference Include="Microsoft.Agents.AI.Hosting.AspNetCore" />
<PackageReference Include="Microsoft.Agents.AI.Hosting.OpenAI" />
<PackageReference Include="Microsoft.Agents.AI.Workflows" />
<PackageReference Include="Microsoft.Agents.AI.Workflows.Generators" PrivateAssets="all" />
<PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" />
<PackageReference Include="Microsoft.Identity.Web" />Exceptions (if any)
Unhandled exception. System.MissingMethodException: Method not found: 'Void OpenAI.Responses.ResponsesClient..ctor(System.ClientModel.Primitives.ClientPipeline, OpenAI.OpenAIClientOptions)'.
at Azure.AI.OpenAI.Responses.AzureResponsesClient..ctor(ClientPipeline pipeline, String deploymentName, Uri endpoint, AzureOpenAIClientOptions options)
at Azure.AI.OpenAI.AzureOpenAIClient.GetResponsesClient()
Aspire doctor output
Anything else?
It might be an issue that is caused by the following differences in dependency versions:
Microsoft.Agents.AI.Hosting.OpenAI 1.21.0-alpha.260911.1:
- OpenAI (>= 2.13.0)
Aspire.Azure.AI.OpenAI 13.5.4-preview.1.26464.4:
- Azure.AI.OpenAI (>= 2.9.0-beta.1)
- OpenAI (>= 2.12.0)
Also reported as microsoft/agent-framework#7484
Seemingly related to Azure/azure-sdk-for-net#60689
Workaround not possible: It might have been possible to work around this when manually specifying the OpenAI package version but that is blocked by the
Aspire.Azure.AI.OpenAI 13.5.4-preview.1.26464.4 -> OpenAI (>= 2.12.0)
requirement
Activity
[-]Missing method when calling GetResponsesClient() on AzureOpenAIClient. Conflicting OpenAI version dependencies in Aspire.Azure.AI.OpenAI 13.5.4-preview.1.26464.4[/-][+]Missing method when calling GetResponsesClient() on AzureOpenAIClient. Conflicting OpenAI version dependencies[/+]joperezr commentedon Sep 16, 2026
🤖 Aspire triage pass — 2026-09-16 13:21 UTC
Area:
area-integrationsKind: bug
Repro: partial — see lines 7–16 and 30–35 of the issue body
Affected version(s): 13.5.4-preview.1 (latest: 13.5.4)
Severity: S3 — a specific Azure OpenAI and Agents package combination fails at runtime; the report identifies a likely dependency conflict but lacks a standalone repro
Urgency: ⚪ backlog — no milestone
Reason: credible integration compatibility issue, but the preview-version report and partial repro are not sufficient to plan it into 13.6
Suggested owner(s): Sébastien Ros (@sebastienros) (score 141), backup Eric Erhardt (@eerhardt) (score 81)
Evidence:
area-integrations(last 30d)area-integrationsarea-integrations(last 30d)Github Modelresources #18953 and Hide azure-environment when all Azure resources use emulators #19617 as completed inarea-integrationsConfidence: medium
Needs human?: no
[-]Missing method when calling GetResponsesClient() on AzureOpenAIClient. Conflicting OpenAI version dependencies[/-][+]Missing method when calling GetResponsesClient() on AzureOpenAIClient[/+]hansmbakker commentedon Sep 18, 2026
I got feedback that Azure.AI.OpenAI is not supported anymore:
Could you please see what this means for the (Azure) OpenAI Aspire component and the advice on what package to use, to get a Responses client for a model in Foundry?
The other Aspire component (Aspire.Azure.AI.Inference), recommended for connecting to Foundry, uses a retired SDK:
See #18525 and microsoft/aspire.dev#1658
eerhardt commentedon Sep 23, 2026
Thanks Hans Bakker (@hansmbakker). I've opened #20401 to remove these unsupported client libraries and to add 2 new ones.