Enable UBA on Local Workstations (UE 5.5 and earlier)

Update Authentication (5.5 and older only)

If you haven’t already, apply the authentication patch covered in the UGS configuration documents

Update BuildConfiguration.xml

To have the engine build using UBA by default, update Engine\Saved\UnrealBuildtool\BuildConfiguration.xml to match this configuration:

<?xml version="1.0" encoding="utf-8" ?>
<Configuration xmlns="https://www.unrealengine.com/BuildConfiguration">
    <BuildConfiguration>
        <bAllowUBAExecutor>true</bAllowUBAExecutor>
    </BuildConfiguration>
    <UnrealBuildAccelerator>
        <bLaunchVisualizer>true</bLaunchVisualizer>
        <bUseCrypto>true</bUseCrypto>
    </UnrealBuildAccelerator>
</Configuration>

(visualizer is optional)

Update DefaultEngine.ini

Go to the Universal Foundry settings page, scroll down to “Horde API” and copy the “Horde API URL” to the clipboard.

To <YourGame>/Config/DefaultEngine.ini add:

[Horde]
ServerUrl=**<Your Horde API URL>**
UbaEnabled=true
UbaCluster=developer
UbaEncryption=Ssl
UbaConnectionMode=Direct