How to open an elevated cmd using command line for Windows?

Question

How do I open a elevated command prompt using command lines on a normal cmd?

For example, I use runas /username:admin cmd but the cmd that was opened do

Answer 1

There are several ways to open an elevated cmd, but only your method works from the standard command prompt. You just need to put user not username:

runas /user:machinename\adminuser cmd

See relevant help from Microsoft community.