> For the complete documentation index, see [llms.txt](https://docs.aurelia.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aurelia.io/developer-guides/error-messages/router/aur3168.md).

# AUR3168

## Error Message

`AUR3168: A root RouteContext is already registered. A possible cause is the RouterConfiguration being registered more than once in the same container tree. If you have a multi-rooted app, make sure you register RouterConfiguration only in the "forked" containers and not in the common root.`

## Description

This error occurs when the router attempts to register a root `RouteContext` but finds one already registered. The most common cause is registering router configuration more than once in the same DI container tree.

## Solutions

* Ensure `RouterConfiguration` is only registered once per container tree.
* For multi-root apps, register router configuration in forked containers, not the shared root container.

## Troubleshooting

* Search for multiple registrations of router configuration/plugins.
* Check plugin setup and ensure it isn’t installed twice.


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