When I install PTC licence serve, it said there is no SERVER line,

[sohara]

but I have the license file, I just don't  know how to do.

[MartinHanak]

Hi,

your license is probably LOCKED, therefore you do not need to install license manager.

If you use Mathcad Prime, then use information included in attached PDF file.

MH

[VladimirN]

Here is a links (this documents also can be found in attachment):

"Mathcad Licensing FAQ": TS Miscellaneous: Mathcad Licensing FAQ - PTC.com

"PTC Mathcad Prime 3.0 Installation Instructions":

PTC Mathcad Prime 3.0 Installation Instructions

http://www.ptc.com/~/media/Files/PDFs/Mathcad/Mathcad_Prime_Installation_Instructions.ashx?la=en