asp.net-mvc – SignInManager.PasswordSignInAsync对我说谎

//
// GET: /Account/Login
[AllowAnonymous]
public ActionResult Login(string returnUrl)
{
    ViewBag.ReturnUrl = returnUrl;
    return View();
}

//
// POST: /Account/Login
[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Login(LoginViewModel model,string returnUrl)
{
    if (!ModelState.IsValid)
    {
        return View(model);
    }

    // This doesn't count login failures towards account lockout
    // To enable password failures to trigger account lockout,change to shouldLockout: true
    var result = await SignInManager.PasswordSignInAsync(model.Email,model.Password,model.RememberMe,shouldLockout: false);
    switch (result)
    {
        case SignInStatus.Success:
            return RedirectToLocal(returnUrl);
        case SignInStatus.LockedOut:
            return View("Lockout");
        case SignInStatus.RequiresVerification:
            return RedirectToAction("SendCode",new { ReturnUrl = returnUrl,RememberMe = model.RememberMe });
        case SignInStatus.Failure:
        default:
            ModelState.AddModelError("",Account.LoginFailure);
            return View(model);
    }
}

这是Visual Studio MVC应用程序模板附带的代码.它一直工作到一天突然停止工作.我已通过此代码调试SignInManager.PasswordSignInAsync返回成功,但在以下请求中,我尚未登录.

更新：

我搁置了所有挂起的更改,但仍然无法登录.我是唯一一个处理此代码的人.这不是我在做什么.

进一步更新：

此代码适用于我的同事机器.当我将它发布到登台服务器时,它可以工作.它只是无法在我的电脑上工作.