Ensure you do not try to extract part03 individually, as split archives cannot be opened separately.
Before extracting, ensure your files are named correctly so the extraction software can recognize the sequence: to a single, dedicated folder. sc24401-NOTDv2020.part03 (2).rar
: If you have a file named ...part03 (2).rar , rename it to sc24401-NOTDv2020.part03.rar . The software often fails if the naming convention is broken by extra characters like "(2)". 2. Extract the Archive Ensure you do not try to extract part03