# Windows 11 Problem

## Windows 11 Problem

Use this page when the client fails to start on Windows 11.

Use it for `Cannot init d3d`, GRF errors, or launcher startup failures.

<figure><img src="/files/IGex6SPjVeNPdAtxMr5l" alt=""><figcaption></figcaption></figure>

These errors often come from a missing or broken Visual C++ runtime.

### What this fix covers

* `Cannot init d3d`
* GRF file errors during launch
* Launcher opens, but the client does not start
* Fresh Windows 11 installs with missing runtime files

### Install the required runtime

1. Open [Visual C++ Redistributable Runtime Package All-in-One](https://www.techpowerup.com/download/visual-c-redistributable-runtime-package-all-in-one/).
2. Click **Download**.
3. Choose the closest download server.
4. Extract the downloaded archive.
5. Run `install_all`.
6. Let the full runtime installation finish.
7. Open **RO RevoLoka Launcher**.
8. Click **START**.

{% hint style="info" %}
Install the full runtime package set. Do not skip any version during setup.
{% endhint %}

### If the issue continues

Try these checks next:

1. Run `Setup.exe` and switch the renderer.
2. Re-extract the full client into a clean folder.
3. Make sure Windows Security did not remove launcher files.

### Related pages

* [White Screen on Launch](/rowiki/guide/installation-guide/white-screen-on-launch.md)
* [Missing Files or Broken Client](/rowiki/guide/installation-guide/missing-files-or-broken-client.md)
* [Missing Launcher or Patcher](/rowiki/guide/installation-guide/missing-files.md)
* [Installation Guide](/rowiki/guide/installation-guide.md)


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