It doesn't modify the computer's system files.
Word 2013 requires a product key. Almost every "portable" version claims to be "pre-activated." This usually means the crack has disabled your firewall or patched system files. Windows will likely flag this as a severe threat (Trojan:Win32/Wacatac), and it will break after the next security update. microsoft word 2013 portable
For those looking for a more straightforward, web-based solution: It doesn't modify the computer's system files
While "portable" editions like the one mentioned at Microsoft Word 2013 Portable offer convenience, always ensure your source is reputable and that you maintain backups of your critical data. Conclusion microsoft word 2013 portable