There are multiple cases of not having internet access despite having connected to the wifi after the recent macOS updates. We do not know the cause of the issue but here is a solution that has worked on every case.

你的Wi-Fi可能遇到了多种问题，不过这里有个（软件方面）万能的解决办法

  1. In “System Preferences”, go to “Network” 打开“设置”，进入“网络”
  2. Select the profile called “Wi-Fi” by clicking on it 选择“Wifi”
  3. Click on the gear icon at the bottom, click “Make Service Inactive” in the dropdown menu 点击下方的齿轮，选择“禁用”
  4. Click the “Apply” button at the bottom right, this disables your current Wi-Fi profile 点击“应用”以禁用当前的Wifi配置
  5. Click the “+” icon to add a new profile 点击“+”
  6. Choose “Wi-Fi” as the interface and click “Create” 选择“WiFi”，点击“创建”
  7. Click “Apply” again and now try to connect to the wifi 点击“应用”，您的WiFi问题或许已被解决