» установка программы через интернет

есть net приложение, которое запускает установку программы через интернет. при запуске получаю:
Цитата:

Application download did not succeed. Check your network connection, or contact your system administrator or network service provider.

в details.... следующее
Цитата:

...
ERROR SUMMARY
    Below is a summary of the errors, details of these errors are listed later in the log.
    * Activation of Y:\MonolitWin.Net.application resulted in exception. Following failure messages were detected:
        + Downloading https://monweb.baltika.ru/MonolitWin.NET/MonolitWin.Net.application did not succeed.
        + The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel.
        + The remote certificate is invalid according to the validation procedure.
...

на большинстве машин все в порядке, не ставится только на несколько(есть win server 2003 и win xp). как быть?