: Natively supports .doc , .xls , and .ppt formats. To open modern .docx or .xlsx files, you must install the Microsoft Office 2007 Compatibility Pack, which can be difficult to integrate into a portable build. Significant Risks & Limitations Support has ended for Office 2003 - Microsoft Support
However, there is no official "portable" version of Microsoft Office 2003 released by Microsoft. Any "portable full version" you find online is typically an unauthorized modification created by third-party tools. 🛠️ Technical Context Microsoft Office 2003 - Portable Version full version