Missing license for HALion Sonic content after installing "Missing VST Sounds"

Problem

After installing a download suggested by the Steinberg Download Assistant under Updates → VST Sounds, an error message appears in Cubase, Dorico, Nuendo, VST Live, or HALion Sonic, informing about a missing license for HALion Sonic content:

Another symptom: Sounds for which a license is missing are marked with red key icons or warning symbols in HALion Sonic's MediaBay.

Background

In some cases, users were temporarily able to access a download titled “Install Missing VST Sounds” in the Steinberg Download Assistant, for which they did not have a license.

Solution

Please note that license errors can have various causes. In these articles, you’ll find more information on general troubleshooting for missing licenses:

• Steinberg Activation Manager: No license found
• A (red) warning sign or key symbol is displayed at some content

However, if you recently (before August 13, 2026) installed the “Install Missing VST Sounds” download via the Steinberg Download Assistant and subsequently encountered license errors with HALion Sonic content, it is likely that this inadvertently installed content for which you do not have a license.

To remove the unlicensed content, please follow these steps: 

• Open the Steinberg Library Manager.
• Select HALion.
• In the entries of "HALion Sonic Factory Library" and "Sonic Selection", click the REMOVE button to uninstall the related content. 

• Close the Steinberg Library Manager.
• Open the Steinberg Download Assistant.
• Reinstall "HALion Sonic Selection - Content".
  Please select it from the list of downloads for one of these products: 
  • Cubase 13 and later
  • Nuendo 13 and later
  • Dorico 5 and later
  • VST Live (all versions)

We sincerely apologize for any inconvenience that this issue may cause, and thank you for your patience and understanding.