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I am getting exception while passing a long string to save to the windows vault folder using c# and Credential Manager API. Else it is getting saved successfully to the vault.

Exception coming is
Specified argument was out of the range of valid values.

Parameter name: The password has exceeded 512 bytes.
&

password string passed is "TERRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRTGVBFXDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDTREEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEECFGBBCVBDRFGDXFXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXRETWEREWRW3ERWERWRWRWRRRRRRRRRRRRRRRRRRRRRFDSFFFSDFSFSFSFDSFDDFSFSFSFGRWERWREWRWRWRDXVGFDGFDGFDGFDGDGDFGDGDGDREWRWREWRERRWREWREWRDXVCXBCVVVVVVVVVVVVVVREWRWERRRRRRRRRRREWRWRWREWR"

What I have tried:

public void SavePassword(string password)
       {
           try
           {
               using (var cred = new Credential())
               {
                   cred.Password = password;
                   cred.Target = PasswordName;
                   cred.Type = CredentialType.Generic;
                   cred.PersistanceType = PersistanceType.LocalComputer;
                   cred.Save();
               }
           }
           catch(Exception ex)
           {

           }

       }
Posted 18-May-18 1:31am
Updated 18-May-18 1:42am
Comments
gkp1992 18-May-18 7:39am
   
Just me or the password string goes on and on in a single line overflowing the CP page?Chrome by the way.
RichardDeeming 18-May-18 9:40am
   
It's not just you. The browser can't find an obvious place to break the line, so without word-wrap: break-word; on the containing <div>, it won't wrap onto a new line.
gkp1992 5 days ago
   
Why do you need to have such a long password anyway? Can a user ever remember that?

1 solution

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Solution 1

Parameter name: The password has exceeded 512 bytes.


Your password is 600 bytes long and the maximum allowed is 512.
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