The very last comunity does not open Windows-Legacy projects, see
Deprecating Windows-Legacy
Over the last few years, we’ve shifted focus from Windows Legacy projects and invested in Windows and Cross-Platform. We believe we are now at the next stage and starting with this release, creating or editing Windows-Legacy projects is not supported anymore. Opening existing Windows Legacy projects only gives you an option to convert them to Windows projects.
This means that the Studio 2024.10.x release will be the last long term support version that supports legacy projects (please refer to the Product lifecycle page for more information)