If you need to run the installed Macrium UI inside Windows (without booting to PE), you must use Windows To Go or a full portable Windows installation on an SSD.
If you need a portable, full-featured, free (or low-cost) backup solution, consider these legitimate options:
For those who absolutely need the "full" features portably for a short-term project or emergency, here is a legal method:
Disclaimer: This works only for 30 days. After that, the advanced features deactivate.
What you now have:
This is the only safe and legal "Macrium Reflect full portable free" method available.
New Windows updates (especially major versions like 24H2) change disk architecture. Legitimate Macrium Reflect updates are released regularly. Cracked versions never update, leaving you vulnerable to bugs and incompatibilities.