Spawing exe not inheriting permissions

I have an exe (test.exe) which is a 32 bit written in c++ (unicode charset). This exe will perform the restore operation. The steps include:

1. check outlook installation and load msmapi32.dll
2. create a subfolder in inbox of the specified user.
3. importing eml file into the subfolder.

These operations are done using temporary u开发者_JAVA百科ser who has given full access permission.

This exe is executing fine. The issue is when I try to spawn this exe using C# Process.start(), it fails with [MAPI_E_FAILONEPROVIDER] while calling "createstoreentryid".

Any suggestions please.

       using (UNCAccessWithCredentials unc = new UNCAccessWithCredentials())
        {
            if (unc.NetUseWithCredentials(path,
                                          userName,
                                          domain,
                                          passWord,textFile))
            {
                System.Diagnostics.Process.Start(path);
            }

        }