Tomáš Zato Tomáš Zato - 1 year ago 200
Git Question

Using "KexAlgorithms diffie-hellman-group1-sha1" did not resolve "no matching key exchange method found" error

There's a lot of questions about the following error, but they all have same solution which did not have any effect:

$ git push
Unable to negotiate with 192.168.XXX.XXX: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

There is an article on that didn't help. Particularly this was suggested:

... in the ~/.ssh/config file:

KexAlgorithms +diffie-hellman-group1-sha1

I did exactly that. I assume that
resolves to
on windows. My file is in

## use kex algorithm ##
Host 192.168.XXX.XXX
KexAlgorithms diffie-hellman-group1-sha1

The result is that nothing changed. There is also suggestion to use
ssh -o
but I'm yet to find an answer that bothers to describe how exactly yo do that. I tried this:

$ ssh -oKexAlgorithms=+diffie-hellman-group1-sha1
usage: ssh [-1246AaCfGgKkMNnqsTtVvXxYy] [-b bind_address] [-c cipher_spec]

I need to connect to that GIT repository. I am on windows. The repository uses Gerrit. I also use SourceTree and it has no problems pushing into the repository. So the repository works, but git or openSSH in my bash is broken.

What did I do wrong that this solution didn't work for me?

Answer Source

Resolved by using this command I randomly found in some comment thread:

export GIT_SSH_COMMAND='ssh -o KexAlgorithms=+diffie-hellman-group1-sha1'

Must be called every time you open the Git Bash. Yeah, git is hell.

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