A full Office 2007 Professional installer is usually between 500MB and 900MB. If your download is significantly smaller, it is likely missing the .cab files. Step 5: Extract the ISO Properly If you downloaded an .iso file:
Do not just double-click to mount it (especially on older versions of Windows). Use a tool like or WinRAR . Right-click the ISO and select "Extract to [Folder Name]" . officelrcab download office 2007 fixed
If you are installing from a folder, the extraction tool might have skipped certain files. A full Office 2007 Professional installer is usually