Skip to content

Clarify that multiple calls to UseAzureMonitor is not allowed #56235

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
mattsains-msft merged 2 commits into from
Feb 13, 2026
Merged

Clarify that multiple calls to UseAzureMonitor is not allowed #56235

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
56d5245
Clarify that multiple calls to UseAzureMonitor is not allowed
Feb 12, 2026
6ef0f60
Update README.md
mattsains-msft Feb 12, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -109,7 +109,7 @@ var app = builder.Build();
Note that in the examples above, `UseAzureMonitor` is added to the `IServiceCollection` in the `Program.cs` file. You can also add it in the `ConfigureServices` method of your `Startup.cs` file.

> **Note**
> Multiple calls to `AddOpenTelemetry.UseAzureMonitor()` will **NOT** result in multiple providers. Only a single `TracerProvider`, `MeterProvider` and `LoggerProvider` will be created in the target `IServiceCollection`. To establish multiple providers use the `Sdk.CreateTracerProviderBuilder()` and/or `Sdk.CreateMeterProviderBuilder()` and/or `LoggerFactory.CreateLogger` methods with the [Azure Monitor Exporter](https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/monitor/Azure.Monitor.OpenTelemetry.Exporter) instead of using Azure Monitor Distro.
> Multiple calls to `AddOpenTelemetry.UseAzureMonitor()` will **NOT** result in multiple providers and will throw `System.NotSupportedException`. Only a single `TracerProvider`, `MeterProvider` and `LoggerProvider` can be created in the target `IServiceCollection`. To establish multiple providers use the `Sdk.CreateTracerProviderBuilder()` and/or `Sdk.CreateMeterProviderBuilder()` and/or `LoggerFactory.CreateLogger` methods with the [Azure Monitor Exporter](https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/monitor/Azure.Monitor.OpenTelemetry.Exporter) instead of using Azure Monitor Distro.

### Authenticate the client

Expand Down