Git: Could not resolve host github.com error while cloning remote repository in git

I got a similar error, and it's caused by incorrect proxy setting. This command saved me:

git config --global --unset http.proxy

https version:

git config --global --unset https.proxy

do i need to configure proxy settings? because my office has got proxy servers.

Yes, you can do so by setting HTTP_PROXY, and HTTPS_PROXY environment variables.

See "Syncing with github":

set HTTPS_PROXY=http://<login_internet>:<password_internet>@aproxy:aport
set HTTP_PROXY=http://<login_internet>:<password_internet>@aproxy:aport
set NO_PROXY=localhost,my.company

(To avoid putting your credentials -- username/password -- in clear in the proxy URL, see below)

Note the NO_PROXY, to allow to access internal site to your company

You also can register that in your git config:

git config --global http.proxy http://<login_internet>:<password_internet>@aproxy:aport

But if you have incorrect proxy Git settings, remove them:

cd /path/to/repo
git config --unset http.proxy
git config --global --unset http.proxy
git config --system --unset http.proxy

git config --unset https.proxy
git config --global --unset https.proxy
git config --system --unset https.proxy

# double-check with:
git config -l --show-origin | grep -i proxy

---

No credentials needed: use genotrance/px.
If you are, as I am, in a company behind a NTLM proxy, all you need to do is:

• unzip px-v0.4.0.zip anywhere you want
• change the px.ini config file (put it in %USERPROFILE%), chaging the server line:

  [proxy]
  server = proxy.my.company:8080  <= use your company proxy:port
  listen = 127.0.0.1
  port = 3128
  

• use HTTP(S) proxy variable without your credentials! (the px proxy will reuse the ones from the current Widows session, either through Microsoft SSPI or Microsoft Kerberos)

That will give you:

set HTTPS_PROXY=http://127.0.0.1:3128
set HTTP_PROXY=http://127.0.0.1:3128
set NO_PROXY=localhost,my.company

Spent a couple hours trying to fix this.

Re-connecting my wifi did the trick.