I am trying to install sfdx on my windows 64 to create lwc, I have VS code with salesforce extension and lwc extension. I downloaded sfdx cli from here. https://developer.salesforce.com/tools/sfdxcli
After installing cli, I setup the system variables to point to salesforce cli\bin. Now when I am going to VS code terminal and use the command sfdx plugins I get the message "no plugins installed", if I try to update the cli with sfdx update I get the error "S3 host is not reachable.". I am able to check the version with sfdx -v and the version is "sfdx-cli/6.51.1-ba7205094b (windows-x64) node-v8.9.4".
Am I missing any step?