as of 6-24-2017 the link from inside TBC no longer goes to the login page, it looks like the login page has changed and maybe thats why TBC is having the problem which is a blank white page.
There were changes that enable you to access the Legacy (TCC) or new Trimble Connect accounts.
I tried it, and noticed it did take a long time to draw the background graphic (e.g. 30 seconds plus). But it is working eventually and the Sign In form appears with the graphic (latest version of 3.90).
If it's not a timing thing, then maybe some information about what browser you use could help? Also if you Right Click you can get the Properties for the HTML document. That may tell us something about what is happening too.
TBC version 3.9 all of the latest browsers are up to date and tried setting them all as default but none of them makes a difference it's a blank white page. Edge,IE,Firefox and my usual default browser is chrome. All of them worked up until the day the new login was installed with the legacy etc. I can entrance directly from any browser on the sign in page but only in the browser not from within TBC
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