Older Siemens installers are notorious for clashing with modern antivirus heuristics. Disable your protection temporarily during the install.
Always execute the setup.exe with administrative privileges. Tia Portal 10.5 Sp2 Extra Quality Download
Offered better compatibility with Windows XP and Windows 7 (32-bit). Enhanced the HMI Basic Panel integration. Ensuring an "Extra Quality" Download Older Siemens installers are notorious for clashing with