Deep Freeze is proprietary software. Applying a "patch" to bypass licensing is a violation of the Digital Millennium Copyright Act (DMCA) in the US and similar laws globally. For a business, using a cracked patch exposes you to audits and lawsuits from Faronics.
This phrase appears to be a specific string that doesn't correspond to any major public release or verified developer patch notes in my current database. It is possible this refers to: A niche or private mod: deep free exclusiveze 863 patch
Let’s be technical for a moment. Deep Freeze uses a proprietary 256-bit AES encryption for its license keys and a digital signature check on its DFServ.exe and DF5Serv.exe binaries. The "ExclusiveZE 863 patch" claims to remove this check. However, because Deep Freeze loads before the Windows kernel, a modified binary will trigger a error. In practice, 99% of these patches simply disable Windows Security or replace legitimate files with corrupted ones. Deep Freeze is proprietary software