– Microsoft never released Office 97 as a portable app. Any “portable” version you find online is unofficial, often repackaged (and sometimes tampered with).
One of the standout features of MS Office 97 was its portability. Recognizing the growing need for mobility and flexibility in the workplace, Microsoft designed MS Office 97 to be more portable than its predecessors. This was achieved through several key enhancements: ms office 97 portable