> ## Documentation Index
> Fetch the complete documentation index at: https://syteca.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Install the ACB Service

> Install the Syteca Application Credentials Broker on a Windows host — system requirements (IIS, .NET 8.0, Syteca Application Server compatibility matrix), MSI installation.

The ACB service is a standalone IIS application — installed via MSI on a Windows host that has access to the Syteca Application Server. Three steps in order: confirm prerequisites, install the MSI, then [set up a user account](/docs/api/acb/setup-user-account) with a Refresh Token.

<Warning>
  **NOT AVAILABLE IN SAAS.** This procedure applies to **on-premises** deployments only.
</Warning>

## 1. System requirements

| Requirement                   | Supported / required                                                                                                                                                                             |
| ----------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| **Operating system**          | Windows Server 2022 or 2019 **(recommended)**, Windows Server 2019 Core, 2016, 2012, or Windows 10. Both x86 and x64 supported.                                                                  |
| **IIS**                       | 7.5 or higher                                                                                                                                                                                    |
| **.NET runtime**              | [ASP.NET Core 8.0 Runtime (v8.0.12) — Windows Hosting Bundle](https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/runtime-aspnetcore-8.0.12-windows-hosting-bundle-installer) or higher |
| **Syteca Application Server** | See compatibility matrix below                                                                                                                                                                   |

For turning on IIS and configuring its features, see [Management Tool installation prerequisites](/docs/administration/deployment/management-tool-prerequisites) — the IIS configuration is identical.

### ACB / Application Server version compatibility

| ACB version      | Requires Syteca Application Server |
| ---------------- | ---------------------------------- |
| **1.3**          | 7.23 or higher                     |
| **1.2**          | 7.22 or higher                     |
| **Prior to 1.2** | 6.41.1 or higher                   |

<Note>
  Newer ACB versions have been released alongside the OpenAPI spec maintained by Syteca engineering — see the **NEW** flag on endpoints like [Heartbeat](/docs/api/acb/endpoints/heartbeat). Check with your Syteca vendor for the version corresponding to your Application Server build.
</Note>

## 2. Install the ACB service

The latest ACB version is always available at:

```text theme={"system"}
https://download.syteca.com/Syteca_ACB.zip
```

<Steps>
  <Step title="Download the MSI">
    Download the `.zip` file from the URL above. Extract it to get the `.msi` installer.
  </Step>

  <Step title="Run the installer">
    Double-click the `.msi` file to open the installation wizard. Follow the wizard prompts — defaults are appropriate for most deployments.
  </Step>

  <Step title="Verify installation">
    After installation completes, the ACB service is installed as an IIS application. Two things are now available:

    * The REST API at `https://<hostname>/SytecaACB/...`
    * The CLI tool at `C:\Program Files (x86)\Ekran System\Ekran System Application Credentials Broker\Console\SytecaACBConsole.exe`
  </Step>
</Steps>

<Warning>
  The install path `C:\Program Files (x86)\Ekran System\Ekran System Application Credentials Broker\Console\` is a literal legacy system identifier — preserve it exactly in scripts and automation.
</Warning>

## 3. Verify registration in the Management Tool

After installation, the ACB service registers itself with the Application Server. Verify by signing in to the Management Tool, clicking the **Configuration** gear icon, and selecting the **Applications** tab — a new record for the ACB service should appear there.

If you need to deactivate the ACB integration later, click the **Remove** icon on the right of the application's row on the Applications tab. To reactivate, reinstall.

## Next steps

| Task                                          | Page                                               |
| --------------------------------------------- | -------------------------------------------------- |
| Set up a user account with Refresh Token      | [Set up user account](/docs/api/acb/setup-user-account) |
| Configure permissions for secrets and folders | [Secret permissions](/docs/api/acb/secret-permissions)  |
| Start calling the API                         | [API reference](/docs/api/acb/api-reference)            |

## Related

<CardGroup cols={2}>
  <Card title="API reference" icon="square-code" href="/docs/api/acb/api-reference">
    Authentication, base URL, status codes, rate limiting.
  </Card>

  <Card title="Management Tool prerequisites" icon="list-checks" href="/docs/administration/deployment/management-tool-prerequisites">
    IIS setup details — shared with ACB prerequisites.
  </Card>

  <Card title="CLI reference" icon="terminal" href="/docs/api/acb/cli">
    Command-line wrapper for scripting.
  </Card>

  <Card title="Set up user account" icon="user-plus" href="/docs/api/acb/setup-user-account">
    Next step — generate a Refresh Token for an API consumer.
  </Card>
</CardGroup>