hotmail v1.4.1 is damaged, can't be installed at TB v5.0

[NewsUser]

Hi,

   When installing hotmail v1.4.1 at TB v5.0, it shows that the
hotmail v1.4.1 extension may be damaged, so can't be installed. The
hotmail v1.4.1 extension is downloaded from WebMail official site.
Thanks for yr kind attention.

Best regards.