You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip. How to Extract .7z.001 files - Microsoft Q&A
001 file, no other parts. When I try to extract it, it says "Unexpected end of data". * Original title: How to extract .001 files. Microsoft Learn Using 7-Zip to Unzip Multiple Zip Files - Optiable BBCCom2018.7z.001
The file BBCCom2018.7z.001 is the initial part of a split 7-Zip compressed archive, likely containing a 2018 BBC data collection, which requires all subsequent numbered parts in the same directory to open. Data extraction is achieved by selecting "Extract Here" on the .001 file using software like 7-Zip. For detailed instructions on opening split archives, visit 7-Zip . You can use 7-Zip on any computer, including