Is there any danger in using ConfigureAwait(false) in WebApi or MVC controllers?
<p>Say I have two scenarios:</p>

<p><strong>1) WebApi Controller</strong></p>

<pre><code>    [System.Web.Http.HttpPost]
    [System.Web.Http.AllowAnonymous]
    [Route("api/registerMobile")]
    public async Task&lt;HttpResponseMessage&gt; RegisterMobile(RegisterModel model)
    {
        var registerResponse = await AuthUtilities.RegisterUserAsync(model, _userService, User);
        if (registerResponse.Success) {
            var response = await _userService.GetAuthViewModelAsync(model.Username, User);
            return Request.CreateResponse(HttpStatusCode.OK, new ApiResponseDto() { Success = true, Data = response });
        }
        else {
            return Request.CreateResponse(HttpStatusCode.OK, registerResponse);
        }

    }
</code></pre>

<p><strong>2) MVC Controller</strong></p>

<pre><code>    [Route("public")]
    public async Task&lt;ActionResult&gt; Public()
    {
        if (User.Identity.IsAuthenticated)
        {
            var model = await _userService.GetAuthViewModelAsync(User.Identity.Name);
            return View("~/Views/Home/Index.cshtml", model);
        }
        else
        {
            var model = await _userService.GetAuthViewModelAsync(null);
            return View("~/Views/Home/Index.cshtml", model);
        }
    }
</code></pre>

<p>I've been reading up on when I should use <code>ConfigureAwait</code> and it seems like I should use <code>ConfigureAwait(false)</code> on ALL of my async calls that are not tied directly to the UI.  I don't know what that means though... should I be using <code>.ConfigureAwait(false)</code> on all of the above <code>await</code> calls?</p>

<p>I'm looking for some unambiguous guidelines around when exactly I should be using it.</p>

<p>This question is NOT the same as the <a href="https://stackoverflow.com/questions/13489065/best-practice-to-call-configureawait-for-all-server-side-code">Best practice to call ConfigureAwait for all server-side code</a> - I am looking for a straightforward answer on the use-case for this method in the context of WebApi and MVC, not as general C#.</p>