I have a winrar archive with archive with part 1 and part 2. I have copied them into a same directory. Now, when I am extracting it, all the files get extracted except one whose some parts are included in both archive and I get CRC error. How can I extract this file?
You can't extract this file due to the CRC error. It means a part of your archive is corrupted or incomplete.
You'll have to copy / download the file again and retry to extract it.