Microsoft does not offer an official "portable" version of Office 2007. Files matching the description "Microsoft Office 2007 Portable Word Excel Only 100 MB" are typically unofficial "ThinApp" versions created by third parties. Key Considerations
If you encounter such a 100 MB repack online, treat it as suspicious and do not run it on any machine connected to the internet or containing personal data. Microsoft Office -2007- -Portable- Word ExCel Only 100 Mb
Title:
Analysis of Lightweight Portable Office Suites: A Case Study of “Microsoft Office 2007 Portable” (Word & Excel, ~100 MB) Microsoft does not offer an official "portable" version
Because it is only 100 MB, the following are excluded: Title: Analysis of Lightweight Portable Office Suites: A
While the utility is apparent, the security implications are severe. The 100 MB executable acts as an ideal vessel for malicious payloads.