open the Tia Portal and install HSP 0015, 0022, 0024, 0026. * once install the HSPs, finally install Tia Portal v11 sp2 UPDATE 3. Siemens SiePortal Update 3 for TIA Portal V11 SP2 - SiePortal - Siemens
The Update 3 release focused on refining the existing V11 SP2 platform rather than introducing major new version features: Tia Portal V11 Sp2 Update 3 Download