MSDN SOURCE: SW_DVD5_Office_Professional_Plus_2013_64Bit_English_MLF_X18-55297.ISO Release File: Office_Professional_Plus_2013_VL_64Bit_En-US-Feb2013_X18-55297.iso Size: 1.02GiB CRC32: AFFA93F1 MD5: 426BA8F4D8007771985A70C0F5707F47 SHA-1: EFB686D26DBF96FA180A67946117C1B4F262142E How can i verify it ? I mean verify this information from microsoft ?