TFS error - TF400898: An Internal Error Occurred
<p>Okay, nothing had changed in TFS (at least to my knowledge and I'm the administrator!).</p>

<p>I received the error "TF400898: An Internal Error Occurred", when clicking on a previous sprint in the backlog.  A colleague also received the same error when trying to move an item within an iteration of the current backlog.</p>

<p>Navigating to each team, opening the 'Configure work areas...' menu and doing nothing more, appeared to correct the error (or was it a coincidence?).</p>

<p>Has anyone got a clear and definitive answer as to why the error occurred?  More importantly, how to correct it?  Surely there's more to my simply browsing between the teams.</p>