Adobe does not officially support or distribute "portable" versions. Using such software violates their terms of service and copyright laws [4, 6]. Better Alternatives: Adobe Express:
Regarding the specific "Portable Free" version you mentioned: Software Authenticity & Risks Non-Official Version : The version number "21.1.0.38906" actually corresponds to Photoshop 2020 (Version 21.1) , not CC 2018 (which used Version 19 numbering). Security Hazards Adobe Photoshop CC 2018 21.1.0.38906 -x64- Portable Free
Packages labeled with mismatched version numbers (like "2018" with a "21.x" build) are often repacked by third parties and are frequently bundled with malware, keyloggers, or backdoors. Why Users Seek Photoshop CC 2018 Adobe does not officially support or distribute "portable"