Remote Server Administration Tool

i am trying to install RSAT ,BUT there is error ,"Installer encountered an error 0x8007052e" The username and password is incorrect.HOW to fix this to install RSAT

The shown screenshot indicates that you are trying to install the RSAT for Windows 7 (hence the 6.1).

The proper installer for Windows 8 is here: https://www.microsoft.com/en-us/download/details.aspx?id=28972

And the proper installer for Windows 8.1 is here: https://www.microsoft.com/en-us/download/details.aspx?id=39296

The RSAT packages are specific to the version of Windows you are running. Also, I should add that only Professional or higher version of Windows can run the RSAT.