Bj5.part2.rar
WinRAR is the most reliable tool for multi-part RAR files, though 7-Zip also works well.
Right-click ONLY on the bj5.part1.rar file. Select "Extract Here" or "Extract to [Folder Name]". bj5.part2.rar
One of the parts (likely part2 ) is corrupted or partially downloaded. WinRAR is the most reliable tool for multi-part
The file is currently being used by another application, or you do not have permission. or you do not have permission.