. These "thin apps" are typically created by "cracking" the software and stripping away security protocols, which can expose your system to malware. Microsoft Learn ⚡ Legitimate Ways to Use "Portable" Office
Do not gamble with malware. Do not trust "extra quality" repacks from anonymous forums. The few megabytes you save in compression are not worth losing your files, your identity, or your system integrity. Embrace the legitimate portable revolution—it is more reliable than any cracked .exe will ever be.
Office 365 is a cloud-connected service. Portable versions often break the connection to OneDrive, prevent updates, and frequently crash when trying to handle complex macros or large Excel datasets.