Check out all reviews and tips about Windows 7 on 4sysops.

Those of you who can’t wait to get their hands on Windows 7, might be interested to hear that a Microsoft blogger posted the Windows 7 RTM CRC and SHA-1 checksums. The article is in German and I didn’t find a corresponding English post. I just copied the hash codes at the end of this article. Somehow I think this was just an independent initiative of a Microsoft employee even though a major German news site puts it as if Microsoft officially published the Windows 7 RTM hash sums. Let’s see how long this blog post stays online.

You probably saw this odd competition on many blogs in the last couple of weeks. Almost every day they reported about a new leaked Windows 7 RTM ISO image. Even though I am also very curious about Windows 7, I usually don’t download software through torrent sites. The risk is too high to install software that contains viruses, rootkits or botnet code. If you have the correct checksum, then you are safe. But usually it is not worth the hassle. After the 30 days grace period has ended or after you have rearmed Windows 7 three times, you need a valid product key anyway.

Since you can’t stop those impatient fellows anyway from downloading Windows 7 via torrent sites, I think it is better to publish the checksums. The botnets out there are already big enough. So here are the hash values of the Windows 7 RTM ISO images (check out HashCalc if you need a free checksum calculator):

  • Windows 7 Retail Ultimate E englisch (x86) Name: 7600.16385.090713-1255_x86fre_cliente_en-us_Retail_UltimateE-GRMCEULFRER_EN_DVD.iso CRC: 0x953EFBCC SHA-1: 0xBC10F09B86DCBAF35B31B0E6FBA7D006ACAAD28D
  • Windows 7 Retail Ultimate E englisch (x64) Name: 7600.16385.090713-1255_x64fre_cliente_en-us_Retail_UltimateE-GRMCEULXFRER_EN_DVD.iso CRC: 0x77BE890E SHA-1: 0x029DCCEDD7691206010F84CE58343405A4DA92C9
  • Windows 7 Retail Ultimate englisch (x86) Name: 7600.16385.090713-1255_x86fre_client_en-us_Retail_Ultimate-GRMCULFRER_EN_DVD.iso CRC: 0xC1C20F76 SHA-1: 0x5395DC4B38F7BDB1E005FF414DEEDFDB16DBF610
  • Windows 7 Retail Ultimate englisch (x64) Name: 7600.16385.090713-1255_x64fre_client_en-us_Retail_Ultimate-GRMCULXFRER_EN_DVD.iso CRC: 0x1F1257CA SHA-1: 0x326327CC2FF9F05379F5058C41BE6BC5E004BAA7

Disclaimer: I give no guarantee that the above hashes are correct.