Hi Amar, you may need to install .NET and C++ packages separately. Please see the instructions here: https://campus.tekla.com/forum/installing-licensing/starting-teklalearni...
Had the same problem. Yep, Alex-934 suggestion worked for me. Little addition: you have to close Tekla before you make edit in RegEdit. 'X' and 'Y' values are in DWORD, so I suggest you to change these values to 'decimal' when you edit them.