我清除了%temp%文件夹，并重新启动VS2017。 开始工作很好。

尝试检查任务管理器并杀死任何与Visual Studio相关的进程(任何版本)。

更新: 正如许多人在评论中提到的，最好等一段时间，直到这些过程自己结束

我发现“缓解”痛苦的唯一方法是打开win 10任务管理器，右键单击VSIXAutoUpate.exe，在上下文菜单中选择进入详细信息，右键单击VSIXAutoUpate.exe，再次在上下文菜单中选择设置优先级并选择实时......正如我所说，这是为了减轻痛苦，而不是结束痛苦

根本原因: 如果，我们关闭了系统而没有正确关闭visual studio，下次我们将打开系统，那么有时我们会遇到这个问题，因为设置将在后台运行。

解决办法: 不需要做任何事情，只需等待10到15分钟，然后再次打开视觉工作室。它会自动修复这个问题。

它是扩展自动更新处理正在运行。你可以杀死他们或等待他们完成(推荐)

很可能Visual Studio正在更新，就像错误消息暗示的那样，如果你等待几分钟更新完成，你应该能够再次运行Visual Studio而没有问题。

If the problem persists or if you're just curious, open up your task manager and see if there is anything related to (Microsoft) Visual Studio running but don't just kill the process. Check instead if the process is using any resources - if it has a high I/O count, then it's actually updating and you should let it do its thing. If CPU-usage and memory usage remain mostly constant and there is no disk activity for the process for several minutes, this could mean that the process is stuck. You might have to kill it, but proceed with caution. Hopefully if this is an update for Visual Studio, the process name should include a version number or some sort of indication of what kind of update is being applied that you can use to search for more information through a search engine or through Microsoft's online resources.