Not too sure why sudden cant show the properties of IIS (when right click).
It stuck at process REGASM.EXE, after i kill it then the properties able to show (pop up).
Maybe after I update windows (with restart).

Situation, maybe will cause to NET1.1 in windows 2003 64bit.
but i fix it with double click to run the REGASM.EXE at the path ...NET\Framework\v1.1.4322\.