You can log in to the Siemens Industry Online Support (SIOS) and create a support request to ask for access to older versions.
Due to international regulations, Siemens must verify the identity of the person downloading the software. You will likely see a prompt stating that the software is subject to export restrictions. Trial vs. Full Version: The download typically functions as a 21-day Trial version Download Tia Portal V12 Sp1
: Avoid third-party "cracked" sites, as they often contain malware or corrupted setup files that can crash industrial PC systems. Quick Review Summary Pros Necessary for specific older hardware Severe OS compatibility issues (No Win 10/11) Low system resource usage compared to V19+ Lacks modern features like PLCSIM Advanced Stable for simple S7-1200 projects No longer receives security or bug updates You can log in to the Siemens Industry
If the installer asks for a restart repeatedly, you may need to delete the "PendingFileRenameOperations" key in the Windows Registry. Trial vs
: Converting projects from older "S7 Classic" versions can be complex. Installation & Download Tips Downloading & Installing TIA Portal & PLC SIM