If you are looking for a legal, modern alternative to a cracked portable copy, consider these options:
: For viewing and sharing designs without installation, use the free Online PCB Viewer . Altium Designer 10.1377.27009 portable .rar
Don’t open it. Even without running the main program, RAR files can contain exploit code that triggers when extracted. Scan the archive with VirusTotal if you must, but the safest action is to delete it. If you are looking for a legal, modern