Windows and Office Genuine ISO Verifier is a small tool designed to verify the integrity of EXE and ISO files containing the Windows or Microsoft Office installer. The program is based on generating the SHA-1 checksum loaded by the user of the file, and then comparing it with the official checksums of its products made available by Microsoft. On this basis, the tool verifies the integrity and assesses whether our files have not been modified or infected with malicious software in an unauthorized manner.

Use of Windows and Office Genuine ISO Verifier is recommended if you have downloaded the installation files for these products from sources other than official sources. The tool is available in a portable form, which does not require installation and is ready to use right after downloading.