Ok, 
here is when i insert incorrect password 
https://dl.dropboxusercontent.com/u/15956439/20131105_133800.jpg

and here the debug 
https://dl.dropboxusercontent.com/u/15956439/Debug_firstLogin

After unsuccessfully login, windows show me this screen
https://dl.dropboxusercontent.com/u/15956439/20131105_133954.jpg

and if i insert the correct password this screen conitinues to appear.
Here the debug file 
https://dl.dropboxusercontent.com/u/15956439/Debug_secondLogin


To solve i've to press cancel button in the second screen, and wait that the first screen re-appear.

I hope I explained the problem.




2013/11/5 Phil Mayers <p.mayers@imperial.ac.uk>
On 11/05/2013 10:13 AM, Davide Garofalo wrote:
Hi all,

passchange works very fine, but in windows 7, if the user inserts an
incorrect password it will promped the message "password incorrect". At
this point if the user insert the correct password, in the radius log
i've always this error:

I'm not sure I follow you - inserts an incorrect password where, and inserts a correct password where? In the "old password" box?

A full debug would be helpful here; it might simply be an issue of regenerating the challenge again (i.e. a minor source code patch)
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Davide Garofalo