A Windows ECS cannot be logged in to due to some reasons. For example, the network is abnormal, the firewall does not allow access to the local port for accessing the remote desktop, or the ECS vCPUs are overloaded.

Your attempt to access the Internet from your Windows ECS failed. The access failure may be caused by lots of reasons. You can try to troubleshoot this fault here.

Websites running on an ECS might become unreachable for multiple reasons. Check whether the configurations of network, port, firewall, or security group of the ECS are correct.

Generally, an international line is used for accessing a website outside the Chinese mainland. However, the international line may inevitably pass through network nodes distributed around the world, resulting in high latency.

Enabling ECS virtual memory will deteriorate I/O performance. If the memory size of an ECS is insufficient, you are advised to increase its memory size by referring to General Operations for Modifying Specifications. If you really need to enable virtual memory, see Enabling Virtual Memory on a Windows ECS.

Log in to the console and select a region in which you created your ECS to see whether your ECS is displayed.

Host Security Service (HSS) helps you identify and manage the assets on your servers, eliminate risks, and defend against intrusions and web page tampering. There are also advanced security functions available to help you easily detect and handle threats.

Yes. You can use the NAT Gateway service to allow ECSs in a VPC to access the Internet using an EIP. The SNAT function provided by the NAT Gateway service allows the ECSs in a VPC to access the Internet without requiring an EIP.

If you cannot use the new password that you set using the one-click password reset function to log in to the ECS, locate the fault by referring to Why Does Login to My ECS Using the Reset Password Fail?

When you perform critical operations on your ECS with operation protection enabled, for example, deleting your ECS or modifying ECS specifications, you have to enter the password and verification code for authentication. To disable operation protection, see How Can I Disable Operation Protection?