When you install an ECS client, the Installation Failed status is displayed. An error message appears, indicating that you failed to start the client.
Connect to an ECS instance from a remote client and check whether anti-virus applications such as Qihoo 360 are installed on the ECS instance. Anti-virus software causes the installation failure of an ECS client.
You can uninstall the ECS client from the ECS instance, stop anti-virus software, and then reinstall the ECS client. You can perform the following steps: