Nisi’s work blog

This problem happend in most cases becouse of a invalid registry entry (usualy after a mallware/trojan). So there is 2 steps to rezolve it:

1. Click Start, and then click Run.
2. In the Open box, type regsvr32 %systemroot%\system32\netshell.dll, and then click OK.
3. In the RegSvr32 dialog box, click OK.

Now try to open properties of a network connection. If is open ok you are finished, if not go to next step:

1. Click Start, and then click Run.
2. In the Open box, type regsvr32 %systemroot%\system32\ole32.dll, and then click OK.
3. In the RegSvr32 dialog box, click OK.
4. Restart the computer.

Source: microsoft.com