A "portable" application does not write to the Windows Registry, does not create system files in AppData , and does not require DLL registration. The portable version of 16.3 is typically repacked by third-party groups (e.g., via Thinstall or Cameyo) to run entirely from a single folder.
: Search and place components from the PSpice libraries (ensure parts are "PSpice-ready"). orcad pspice 16.3 portable