Що в логах на сервері?
CHAP-Secrets
The Username and Passwords used by to login to the PPTP server are configured here. Pay close attention to the use of spaces and asterisks between usernames and passwords, authentication will not work without them.
General Syntax:
Username * Password *
(username_to_use,blank space,asterisk,blank space,password_to_use,blank space,asterisk)
Example:
marcelo * semino *
eduardo * crea *
The above will create two accounts: 'marcelo' and '"eduardo"' with the passwords '"semino"' and '"crea"' respectively.
WARNING: Do NOT forget the spaces between asterisk and usernames/passwords. If you omit them it will not work.