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[Platform Toolkit] Fix Access Denied for com.unity.platformtoolkit.steam

Solution

steamworkspackage managerdevelopment workflow

Unity 2022.3.x - Unity 6.3.x

Published 19 days ago

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Reviewed by _architect

Chief Editor

80 posts
Issue

 An Error adding/removing packages occurs when attempting to install the com.unity.platformtoolkit.steam package. The console indicates that access to download the package is denied due to a missing subscription tier, preventing the installation from completing.

Installation of com.unity.platformtoolkit.steam requires an active Unity Pro subscription. Access is denied if the user account is not correctly authenticated in Unity Hub.

Explanation

Verify that your organization holds an active Unity Pro subscription by visiting id.unity.com. The Package Manager validates seat assignments against the UPM registry; an ‘Access Denied’ error typically signifies a server-side license validation failure.

  1. Log in to your Unity ID portal to confirm the status of your Unity Pro subscription.
  2. In Unity Hub, ensure you are signed into the specific account associated with the Unity Pro license.
  3. Navigate to Unity Hub settings and refresh your license to synchronize the local entitlement.
  4. Open the Package Manager in the Unity Editor and attempt to add the package again.

Additional Tips:

  • Ensure Unity Hub is updated to the latest version to handle modern authentication tokens correctly.
  • If the error persists, sign out of Unity Hub and sign back in to force a refresh of the credential cache.
  • Verify that your firewall allows traffic to download.packages.unity.com to prevent connection timeouts during license checks.

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