Throughout the whole network, on two solutions
1. Cancel IPV6 network adapter inside to check [I tried invalid, but some users say yes. You do not know Editor's Note]
2. Modify the host. We have a [pro-test results from the speed of 5kb to about 5M, but can not run over broadband]
Check Domain download.visualstudio.microsoft.com Microsoft download site, find the nearest node cdn.
I saw the smallest TTL Hunan and Jiangxi Unicom Unicom's fastest node.
So I copied down IP, to find the native C: \ Windows \ System32 \ drivers \ hosts file in the etc
Then add a line
110.53.72.104 download.visualstudio.microsoft.com
Then refresh dns, ping hosts file to see what has not entered into force, invalid, inspection, effective, closed off vs installer, then restart,
Cengceng speed up.
If you do not know how to operate, you can click on the link under the article, into the group to teach my hands! ! ! !