You want to reset the five languages in a Freelance or Starter version of Studio 2015, Studio 2017 or Studio 2019 but are unable to reinstall Studio or, for internal use, you do not want to.

This solution also applies if you get The project contains languages not installed error when opening a project/package. 

 

1. Close Studio.
2. Click the Windows Start menu and type regedit.
3. Right-click regedit.exe and choose Run as administrator. Choose Yes if prompted.

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4. Navigate to HKEY_CURRENT_USER\SOFTWARE\Microsoft\

• For Studio 2015, rename the LDSRClient4 key to LDSRClient4.old 
• For Studio 2017, rename the LDSRClient5 key to LDSRClient5.old
• For Studio 2019, rename the LDSRClient15 key to LDSRClient15.old

Studio is designed to stop Freelance and Starter users from changing the five initial languages as part of the version restrictions.