Ensure you have 00278.7z.001 , 00278.7z.002 , and any subsequent files in the same directory.
Similar to 7-Zip, WinRAR can open split 7z archives. Troubleshooting: What to Do If It Fails 00278.7z.002
If one part was not downloaded completely, the extraction will fail. Re-downloading the specific broken part usually fixes this. Conclusion Ensure you have 00278
To extract the content, you need all the parts ( .001 , .002 , .003 , etc.) in the same folder. Step 1: Collect All Parts Re-downloading the specific broken part usually fixes this
The files must be named filename.7z.001 , filename.7z.002 , etc. If they are named differently, the program cannot link them together.
Tip: They must be named identically, only with the .00x extension changing. Step 2: Use 7-Zip (Recommended) 7-Zip is the official, free, and best tool for this job. Download and install 7-Zip. Navigate to the folder containing the files. Right-click on (always start with .001 ). Select 7-Zip > Extract Here or Extract to "00278" .