If you need to work with TIA Portal today, do not pursue V11 SP2 unless you have an existing licensed copy and a dedicated legacy PC (or VM). Instead:

Solution: You cannot fix this easily. Use a Virtual Machine with Windows 7 SP1 64-bit. Do not attempt to force installation on Windows 10; it will fail spectacularly.

Unlike the full commercial version, the trial version had strict limitations:

Because this is an older version, its system requirements are modest by today’s standards. However, compatibility is the biggest challenge.

Supported Operating Systems (Original):

Important Warning for Modern PCs: TIA Portal V11 SP2 is not officially supported on Windows 10 or Windows 11. While some users have success with compatibility mode, Siemens never validated this. Expect driver issues, especially with PLC communication over Ethernet.

Hardware Minimum:

Once you have the .iso or .zip file containing the trial, follow this guide meticulously.

Since V11 is obsolete, consider: