: The file is likely corrupted. Try redownloading part 21 specifically.

When dealing with individual archive parts like this, a "good review" typically refers to the of the file. Quick Checklist for Multi-Part RAR Files

: NBA 2K23 is a large, commercially licensed game. If you are downloading these files from a third-party site or forum, check the user comments for that specific "repack" or upload to see if others reported "CRC errors" or "Missing volume" issues.

: Compare the size of part21.rar to the other parts. Usually, all parts except the very last one are the exact same size. If it is significantly smaller, it might be a corrupted download.

: You are missing another part of the sequence.

: Always scan .rar files with updated antivirus software before extracting, especially if they come from unofficial sources. Common Extraction Issues If you are trying to open it and getting an error: