如果在调试模式下运行Coded UI Test，可能会发生这种情况。但如果禁用它，它不会影响测试的执行。以下是克服此问题的方法：

This may occur if you are running a Coded UI Test in debugging mode. But it will not affect the execution of your test if you disable it. Following is a way to overcome this:

在VS中禁用ContextSwitchDeadlock异常，如下所示：

Disable ContextSwitchDeadlock exception in VS as follows:

转到Debug-> Exceptions->'Managed调试助手'。取消选中ContextSwitchDeadlock的复选框。

Go to Debug->Exceptions->'Managed Debugging Assistents'. Uncheck the check-box against ContextSwitchDeadlock.