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SSL_ERROR_SYSCALL typically occurs when the server side is using an SSL certificate to authenticate. This article covers how to fix SSL_ERROR_SYSCALL error in 5 ways.


$ git clone
fatal: unable to access ‘’: LibreSSL SSL_connect: SSL_ERROR_SYSCALL in connection to

Understanding SSL_ERROR_SYSCALL Error

This error typically occurs when the TCP three-way handshake between client and server completes but then a TCP reset packet (often written as “RST”) is received by the client, terminating the connection during the SSL phase.

This error is not produced when a client receives a RST packet during the three-way handshake, or after completion of the SSL/TLS negotiation (SSL phase).

Restart the computer

As we all know, restarting solves 90% of problems, and sometimes restarting the computer can directly solve the problem.

Modify Git network configuration

We can directly modify the global Git configuration file and delete the relevant configuration of HTTP / HTTPS in the file.

$ vim ~/.gitconfig

It can also be modified using the command:

  • $ git config –global –unset http.proxy
  • $ git config –global –unset https.proxy

Check SSL Certificate with OpenSSL in Linux

Change HTTP/HTTPS encryption library

Since the problem is that the LibreSSL library reports an error, we can modify Git to use the OpenSSL library for HTTPS communication.

$ git config –global http.sslBackend “openssl”

Use HTTPS proxy for git connection

When using HTTPS to connect to GitHub for push/pull, we need to change the local git configuration and use a proxy to initiate a request to GitHub.

Execute the following command: $ git config –global -e

This will bring us into git’s configuration file editing interface (which will open with the default editor specified by git). Add the following to this file:

proxy = socks5://
proxy = socks5://

“7891” is the designated entry and exit port of our proxy software, please modify it according to the actual situation.

Use SSH for git connection

It is well known that HTTPS or SSH can be used to clone the GitHub repository, but SSH does not have the network connection problem of HTTPS, so the connection method of push/pull can be changed from HTTPS to SSH.

Requirements: we need to generate an SSH public/private key pair in advance and add the public key to our GitHub account. See Connecting to GitHub with SSH for details on this part .

Enter the corresponding directory of the warehouse and execute the following command: $ git remote set-url origin

After the change is complete, we can use the following command to view the current origin address:

$ git remote -v

Understanding X509 Certificate with Openssl Command