# Installation

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 Note that administrator privileges are required for installation and licensing.
{% endhint %}

### **Installation Steps**

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#### Portal Login

Login to the Theia Software Downloads [portal](https://service.theiaserver.com/login). If you are the group account owner and you have not yet set up your portal account, please follow the instructions in [Setting Up Your User Account](/theia3d-documentation/theia-self-service-portal/setting-up-your-user-account.md).

If you are not the group owner, an account can be created for you by your group owner within the portal from the [Group Page](/theia3d-documentation/theia-self-service-portal/group-page.md) or by request to Theia Support.

Once you have logged in, copy your license key for safekeeping offline.
{% endstep %}

{% step %}

#### Download Installer

In the portal, navigate to the [Downloads Page](/theia3d-documentation/theia-self-service-portal/downloads-page.md). 

The latest version of each major release that was issued while your Theia3D Support or License was active are available for download from our self-service portal (Theia3D v2023 onwards).

<figure><img src="/files/yJ8mXCasz56hZSvsQr8Q" alt=""><figcaption><p>Theia self-service portal Downloads page</p></figcaption></figure>

{% hint style="info" %}
**Note:**

For **Theia3D Axiom v2025 and later**, engines are built automatically for all graphics cards—no engine installers are required.

For **Theia3D Apollo v2024 and earlier,** engine installers are available (but not required) for **RTX 3090** and **RTX 4090** graphics cards. Engines for all other graphics cards are built automatically the first time Theia3D is run.
{% endhint %}
{% endstep %}

{% step %}

#### Drivers

Ensure the correct drivers are installed for your GPU.

* For **NVIDIA GeForce RTX 5090 GPUs**, we recommend [driver 572.83](https://www.nvidia.com/en-us/drivers/details/242208/).
* &#x20;For other GPUs, we recommend using the most recent drivers. Use the NVIDIA App or the [NVIDIA Driver Search tool](https://www.nvidia.com/en-us/drivers/) to check if your drivers are up-to-date, and install any available updates if not.

{% hint style="info" %}
Both GeForce Game Ready Driver and NVIDIA Studio Driver are compatible with Theia3D
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{% step %}

#### Run Theia3D

Run the Theia3D application installer and follow the instructions

* You must scroll to the bottom of the EULA to accept it.
* If you downloaded a Graphics Card Engine from the Theia Software Downloads portal, run the executable once the Theia3D application installer has finished.
  {% endstep %}

{% step %}

#### Launch Theia3D for the first time.

Run Theia3D as an administrator, and when prompted, enter your license key to activate the software. Additional details about license activation can be found on the [License Activation](/theia3d-documentation/getting-started/license-activation.md) page.

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The first time Theia3D launches it will Build Graphics Engines. This step can take approximately 20-30 minutes, but is **only required the first time Theia3D is run.**
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