After installing windows to a short while, rundll32.exe is being deleted by some application and due to SFC removal it won't come back. So the problem is solved by setting its attributes to read-onlly.

How do I do it ?

you can save this command in cmd file and run it after the installation

attrib +r %windir%\system32\rundll32.exe

but are you sure this will solve the problem?

You can do it with INF and AddReg also

thank you vey much. in actuallity i've set up a new line in cmdlines.txt calling upon a .cmd file which contains:

ATTRIB +R %SYSTEMROOT%\system32\rundll32.exe