fatal: unable to access ".....": gnutls_handshake() failed: Handshake failed

This error means that Git cannot establish a secure connection to the server you're trying to use. Your version of Git uses the GnuTLS library to set up TLS (encrypted) connections, and for some reason that setup process is failing.

This could be for a couple of reasons. One is that your server (which one you haven't mentioned) is using an incompatible set of cipher suites or TLS versions, and there's no encryption algorithms in common that can be chosen. It's also possible that you have someone tampering with the connection via a MITM device.

The version of Git and GnuTLS you're using should work just fine with most standard servers. Re-installing it won't help. You can try upgrading to a newer version of Debian, or you can try building Git yourself against a version of libcurl using OpenSSL. You can also just switch to SSH-based remotes, which will avoid this incompatibility altogether.

I got the same error.

You could try to compile git with OpenSSL instead of gnutls using Paul N. Baker's shell script.

1. Create file.sh
2. Put the code of the link into this file
3. Give permission to this file: chmod a+x file.sh
4. Run: sudo ./file.sh

This shell script works for me.

I also incurred this problem with Ubuntu 14.04 LTS. Quickest solution is to use ssh instead of https. Following are steps to replace https from ssh:

1. Generate ssh key using ssh-keygen on the server.

2. Copy public key from generated id_rsa.pub file from step 1 and add it at following links depending on repository host -

   Bitbucket - https://bitbucket.org/account/settings/ssh-keys/

   Github - https://github.com/settings/ssh/new

   Gitlab - https://gitlab.com/profile/keys

3. Now run following command to test authentication from server command line terminal

   Bitbucket

   ssh -T [email protected]

   Github

   ssh -T [email protected]

   Gitlab

   ssh -T [email protected]

4. Go to repo directory and open .git/config file using emac or vi

5. Replace remote "origin" url (which starts with https) with following -

   For Bitbucket - [email protected]:<username>/<repo>.git

   For Github - [email protected]:<username>/<repo>.git

   For Gitlab - [email protected]:<username>/<repo>.git

This is solution fix this issue on ubuntu server 14.04.x

1, Edit file:

sudo nano  /etc/apt/sources.list

2, Add to file sources.list

deb http://security.ubuntu.com/ubuntu xenial-security main
deb http://cz.archive.ubuntu.com/ubuntu xenial main universe

3, Run command update and update CURL to new version

apt-get update && apt-get install curl

4, Check version (Optional):

curl -V
Response :

curl 7.47.0 (x86_64-pc-linux-gnu) libcurl/7.47.0 GnuTLS/3.4.10 zlib/1.2.8 libidn/1.28 librtmp/2.3
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtmp rtsp smb smbs smtp smtps telnet tftp 
Features: AsynchDNS IDN IPv6 Largefile GSS-API Kerberos SPNEGO NTLM NTLM_WB SSL libz TLS-SRP UnixSockets 

5, Test connect with bitbucket (Optional)

GIT_CURL_VERBOSE=1 git ls-remote https://bitbucket.org/
Response:


* Closing connection 0
fatal: repository 'https://bitbucket.org/' not found

This done.