I am also having same error when I try to do refresh in the network folder and also not able to see network connections icon in start menu.
I tried:
Start, Run. cmd.exe
regsvr32 netshell.dll
regsvr32 netcfgx.dll
regsvr32 netman.dll
and restarted the system. but no luck
Do I need to take care of anything else while running the above steps? I got "DllRegisterServer succeeded" for all the three steps.