: Right-click on the .001 file and select 7-Zip > Extract Here .

: The double .7z.7z suggests the file was compressed, and then the resulting archive was compressed a second time before being split.

: The .001 extension means this is only the first part of a larger file that has been split to make it easier to upload or share.

: Always be cautious when opening archives from unknown sources. Ensure your antivirus is active, as multi-part archives are sometimes used to hide large executable files.

: Ensure every numbered part of the archive is downloaded to the same directory.

: Download and install the 7-Zip archiver or a similar tool like Unzip One .

Do you have all the (like .002 or .003) for this file?