Ss-tas-015_s.7z.001 -

Do you have the (like .002) saved in the same folder?

7zip file with numbers on it like 001 means that you only have a part file of the whole compressed file. Microsoft Learn SS-Tas-015_s.7z.001

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 Do you have the (like