Allow encrypted messages to show "Sign in" link when HTML file is opened/read without requiring it to downloaded/saved
When you receive an Encrypted Message in outlook you will get an HTML file attached and you will be directed to download and save the HTML file first and only then will it show you the "Sign In" to reach the email.
However, If you just open this file without saving it first (by clicking on it in outlook) you will not see part of the page that has "Sign In", It is hidden. instead it'll tell you to download/save the files first.
Please remove the confusing requirement of saving the file in order to get to the Sign In