While "LH4K.part01.rar" is a specific filename often associated with large, high-definition video archives—specifically —it essentially represents a fragmented data archive.
Right-click on Part 01 only. The software is designed to automatically "chain" the rest of the parts together. LH4K.part01.rar
If a part was corrupted during download, you may see a "CRC failed" error. Many downloaders use QuickPar or .par2 files to repair these tiny errors without redownloading the whole chunk. While "LH4K