Adobe Acrobat XI Pro reached End of Life (EOL) on October 15, 2017. Here's what that means:
For occasional use, browser-based tools like Smallpdf, ILovePDF, or Adobe’s own Adobe Acrobat online let you edit, compress, and sign PDFs. Be cautious with sensitive documents—use trusted services with no-server-storage policies. adobe acrobat xi pro 11024 ml portable full version portable
A portable version promises:
Unauthorized distribution violates Adobe’s EULA and copyright laws. Companies caught using cracked software face fines and audit risks. Adobe Acrobat XI Pro reached End of Life