That file name, september_7th.part1.rar , indicates it is [1]. To open it, you will need the rest of the parts (e.g., september_7th.part2.rar , part3 , etc.) located in the same folder [1].

To successfully extract the contents, you must download all parts ( .part1.rar , .part2.rar , etc.) [1].

Ensure all files ( part1 , part2 , ..., partN ) are in the same folder [1]. Open Part 1: Right-click on september_7th.part1.rar [1].

This usually happens if one of the parts did not download completely. Re-download the missing part [1].