Ensure you have every numbered file in the set within the same folder.
To access the contents, you generally need of the archive (e.g., .001 , .002 , .003 , etc.). 274674274.7z.001
Right-click the .001 file and select Extract using the 7-Zip utility. 7-Zip will automatically recognize the other parts and join them into a single file or folder. Ensure you have every numbered file in the