To update your existing AWS CLI installation on Windows, download a new installer each time you update to overwrite previous versions. AWS CLI is updated regularly. To see when the latest version is released, see the AWS CLI changelog on GitHub.
Alternatively, you can run the command **msiexec** on Windows Command Promt to run the MSI installer.
msiexec.exe /i https://awscli.amazonaws.com/AWSCLIV2.msi

cmd to open Windows Command Promt, use the command **aws --version** .aws --version

If Windows cannot find the program, you may need to close and reopen the Windows Command Prompt to refresh the path or add the AWS CLI to your path.