# Cannot use Server-side Rendering without an adapter.

> **NoAdapterInstalled**: Cannot use server-rendered pages without an adapter. Please install and configure the appropriate server adapter for your final deployment.

## What went wrong?

[Section titled “What went wrong?”](#what-went-wrong)

To use server-side rendering, an adapter needs to be installed so Astro knows how to generate the proper output for your targeted deployment platform.

**See Also:**

* [Server-side Rendering](/en/guides/on-demand-rendering/)