If you simply want to play Call of Duty: Modern Warfare 2 (2009) without the headache of data6.bin errors:
If you are facing a missing "data6.bin" file error, it is likely due to an incomplete download or an antivirus program incorrectly flagging the file as a threat. Verify Integrity via Official Clients Call Of Duty Modern Warfare 2 Data6 Bin Download
If you are using a repack (e.g., FitGirl or CorePack), . The data6.bin file is unique to that specific repack version. Mixing a data6.bin from Razor1911 with a FitGirl installer will always result in a CRC mismatch error. You must download the entire repack torrent again and force a re-check of the files. If you simply want to play Call of
files from third-party installers as threats and automatically quarantines them. Unofficial Versions: FitGirl or CorePack)