Sdl.TranslationStudio.Api.ProjectManagement.IProjectManagementService' could not be started - Studio 2019\Project Templates Access Denied

Hello,

I have been unable to open Studio 2019 for the past weeks. I have tried to repair it, uninstall and reinstall it, reset paths by renaming them, but to no avail. 

Are there other solutions that I missed?

Thank you,