>>I am addressing this post directly to Norwegian developers, but writing in english so others can read it (and it just takes a lot longer to write in norwegian).
>>
>>I have posted about this issue in the past but had no replies.
>>
>>I first encountered this exception on a norwegian pc running Windows with Norwegian language package.
>>
>>The exception is in Norwegian:
>>Noen eller all identitetsreferanser kan ikke oversettes.
>>
>>But I have also seen the exception in english (I think on a danish PC and/or french PC)
>>Some or all identity references could not be translated.
>>
>>I am not sure where this beeing thrown from and I can't reproduce it on my computer. My app only seem to throw this exception on computers with French, Norwegian or Danish language package for Windows.
>>
>>Any help on this would be great.
>>
>>You can reply in norwegian if you want to.
>>
>>Thanks,
>>Einar
>
>I finnaly got a hold of a Swedish laptop where I could generate the exception. The following code throws the exception mentioned above:
>

>        public static void AddFolderAccess(string path, string identity)
>        {
>            DirectorySecurity directorySecurity = Directory.GetAccessControl(path);
>            FileSystemAccessRule fileSystemAccessRule = new FileSystemAccessRule
>                (identity
>                , FileSystemRights.Modify
>                , InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit
>                , PropagationFlags.None
>                , AccessControlType.Allow);
>
>            directorySecurity.AddAccessRule(fileSystemAccessRule);
>            Directory.SetAccessControl(path, directorySecurity);
>        }
>

>
>If anyone (not only norwegian developers) can help me shed some light on this that would be great.
>
>Thanks,
>Einar

Have you tried using an overload of the FileSystemAccessRule that takes an IdentityReference instead of the string representing the identity?

Not tested:

SecurityIdentifier si = new SecurityIdentifier(WellKnownSidType.NetworkServiceSid , null);

DirectorySecurity directorySecurity = Directory.GetAccessControl(Path);
FileSystemAccessRule fileSystemAccessRule = new FileSystemAccessRule(si.Translate(typeof(NTAccount))
                            , FileSystemRights.Modify
                            , InheritanceFlags.ContainerInherit  | InheritanceFlags.ObjectInherit
                            , PropagationFlags.None
                            , AccessControlType.Allow);

...

I think the names used for Local Service, Network Service, and Local System are different in different languages. Like NT AUTHORITYLOCAL SERVICE versus AUTORITE NTSERVICE LOCAL, etc...

http://msdn.microsoft.com/en-us/library/214122bs(VS.80).aspx

(I"m currently testing something similar)