Error connecting to agent no such file or directory windows 10

@manojampalam here is my debug and an everything I tried:

ssh -V
OpenSSH_for_Windows_7.7p1, LibreSSL 2.6.4

Installed via scoop with:

sudo scoop install 7zip git win32-openssh 
[environment]::setenvironmentvariable('GIT_SSH', (resolve-path (scoop which ssh)), 'USER')
cd "C:UsersTAD BNTscoopappswin32-opensshcurrent"
sudo .install-sshd.ps1
sudo Set-Service ssh-agent -StartupType Automatic

Started the service:

Start-Service ssh-agent
Get-Service ssh-agent

Status   Name               DisplayName
------   ----               -----------
Running  ssh-agent          OpenSSH Authentication Agent

Added the key:

 ssh-add.exe "C:UsersTAD BNT/.ssh/svpd4895"
Enter passphrase for C:UsersTAD BNT/.ssh/svpd4895:
Identity added: C:UsersTAD BNT/.ssh/svpd4895 (C:UsersTAD BNT/.ssh/svpd4895)

Now the ssh command:

ssh pd4895
(....)
debug1: Authentications that can continue: publickey
debug3: start over, passed a different list publickey
debug3: preferred publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Trying private key: C:\Users\TAD BNT/.ssh/svpd4895
debug3: failed to open file:/dev/tty error:3
debug1: read_passphrase: can't open /dev/tty: No such file or directory
Enter passphrase for key 'C:UsersTAD BNT/.ssh/svpd4895':

In my config file this server is set as:

host pd4895
  hostname svpd4895---
  user ---
  port ---
  IdentitiesOnly yes
  IdentityFile ~/.ssh/svpd4895

If I add AddKeysToAgent yes to my config file keys get automatically added to ssh-agent instead of me having to issue ssh-add pathkey, but I still get the Enter passphrase for key message. It looks like there is some communication failure between the ssh client and the agent.

Also, I was reading previous comments again, and I don’t have an SSH_AUTH_SOCK set:

 gci env:SSH_AUTH_SOCK
gci : Cannot find path 'SSH_AUTH_SOCK' because it does not exist.
At line:1 char:1
+ gci env:SSH_AUTH_SOCK

However, when I’m using AddKeysToAgent yes my keys get added to the agent (I can see that with `ssh-add -L), so, apparently, the ssh client is somehow communicating with the agent.

I also tried to use only windows directory separators and .sshsvpd4895 and the issue is the same.

What am I missing here?

The full output of the ssh -vvv is available here: https://gist.github.com/TCB13/aa582b24a08dead443d1179811831d92

Many thanks.

In the course of trying to accomplish a more complicated task (involving hardware security keys and GPG keys for SSH authentication), I have run into an ornery ssh-add utility on my Windows 10 machine. Quite simply, my ssh-add fails to connect to the agent, while all other ssh functions work fine.

When I run ssh-add -L on Powershell 7.0.3, I get the following output:

Error connecting to agent: No such file or directory

However, my ssh-agent service seems to be running just fine:

C:Users[me]> get-service ssh-agent

Status   Name               DisplayName
------   ----               -----------
Running  ssh-agent          OpenSSH Authentication Agent

C:Users[me]> get-service ssh-agent | select *

UserName            : LocalSystem
Description         : Agent to hold private keys used for public key authentication.
DelayedAutoStart    : False
BinaryPathName      : C:WINDOWSSystem32OpenSSHssh-agent.exe
StartupType         : Automatic
Name                : ssh-agent
RequiredServices    : {}
CanPauseAndContinue : False
CanShutdown         : False
CanStop             : True
DisplayName         : OpenSSH Authentication Agent
DependentServices   : {}
MachineName         : .
ServiceName         : ssh-agent
ServicesDependedOn  : {}
StartType           : Automatic
ServiceHandle       :
Status              : Running
ServiceType         : Win32OwnProcess
Site                :
Container           :


C:Users[me]> get-command ssh-add

CommandType     Name                                               Version    Source
-----------     ----                                               -------    ------
Application     ssh-add.exe                                        7.7.2.1    C:WINDOWSSystem32OpenSSHssh-add.exe

Furthermore, I have my standard public/private SSH keypair in the default location (C:Users[me].sshid_rsa, C:Users[me].sshid_rsa.pub). I’ve used this key extensively on GitHub, and ssh itself still works fine in Powershell:

C:Users[me]> ssh -T git@github.com
Enter passphrase for key 'C:Users[me]/.ssh/id_rsa':
Hi [me]! You've successfully authenticated, but GitHub does not provide shell access.

So, given every other aspect of OpenSSH seems to be working fine, why would ssh-add be misbehaving?

Things I have tried to repair it:

• Removing other SSH utilities from my PATH (e.g. those added by Git installation).
• Disabling/re-enabling the Windows optional feature «SSH Client» (and its «SSH Server» counterpart, which I don’t think I need).
• Installing a more recent version of OpenSSH via Chocolatey (https://chocolatey.org/packages/openssh), and pointing all commands to that installation via PATH modification.
• Backing up and removing my .ssh folder, generating a new key (via ssh-keygen), and starting from scratch.
• Changing the startup type of the ssh-agent service between automatic, manual, and disabled

None of the aforementioned activities seemed to have any effect whatsoever. All other ssh tools worked fine (assuming the optional feature was enabled, and service was running), but ssh-add did not.

What other recommendations do others have for diagnosing this ornery utility?

Using Git with SSH in Windows 10

Although Git can be used over HTTPS with username and password authentication, it’s much more convenient to use over SSH. Even with Git Credential Manager for Windows being bundled with Git for Windows.

First, generate your SSH key. Although you can transfer key files between computers, I suggest generating a new one on each computer you use.

Then, associate the generated key with your Windows login by adding it to the OpenSSH Authentication Agent service.

In my case, the service was disabled and the command failed with the following error:

Error connecting to agent: No such file or directory

The documentation suggested trying to start the service:

For me, it just failed with a different error:

To resolve the issue, I had to change the service startup type from Disabled to Automatic in its properties dialog (and start the service then).

With that, the command-line Git client is ready to be used with SSH.

UI clients will typically require additional configuration which is application dependant. In my favorite UI client Fork, this can be done in the File > Configure SSH Keys dialog.

The location of the relevant settings differs between the Git services:

Make sure that you use the SSH URL instead of the HTTPS one when cloning new repositories (it’s the one not starting with https ).

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Can no longer use ssh-add: Error connecting to agent #1781

Purpose of the issue

Description of the issue

Can no longer add ssh keys using ssh-add. Instead I’m thrown the following error:

Error connecting to agent: No such file or directory

I believe this has started happening since the latest Windows update.

My set-up
I’m currently booting an ssh-agent at startup, having un-commented before:

Further debugging
I took a look at the environment variables set:

Which correctly creates into:

I tried setting, SSH_AUTH_SOCK to the full windows path above, however at this point I then get:

Could not add identity «.sshid_rsa»: invalid format

Apologies if this is an issue with ConEmu, I’m not knowledgeable enough to be able to separate the two cleanly.

The text was updated successfully, but these errors were encountered:

Same issue here after the latest Windows update :/
(with ConEmu version 161206)

Same issue, with latest version (180506)

try which ssh-agent Windows 1803 comes with their own OpenSSH version by default now, you probably want to remove that from PATH

Thanks @Stanzilla! I removed %SYSTEMROOT%System32OpenSSH from my PATH and it’s working fine now 🙂

Yep that’s worked for me as well. Cheers @Stanzilla!

@Stanzilla Thanks, that’s worked for me.

Another option (possibly better than using another copy of openssh) is to use the Windows ssh agent. Check status in powershell:

If the service is disabled, start it and set to manual:

If there’s a reason to use a git version of openssh instead of the windows-installed version, that would be good to know.

We need to support older versions of Windows as well

Instead of removing %SYSTEMROOT%System32OpenSSH from your path, merely add the following to your user-profile.cmd file.

It will add gitusrbin to your path again, but this time it comes before the %SYSTEMROOT%System32OpenSSH entry, which allows the ssh-agent calls to work again.

@Stanzilla maybe you could use feature detection to set up default ssh for Windows version that support it or let that be the default and downgrade for non-native ssh?

Instead removing %SYSTEMROOT%System32OpenSSH from you path, merely add the following to your user-profile.cmd file.

This seems like a much better solution than removing native OpenSSH from Windows path, which could have lots of consequences

Thanks @Stanzilla! I removed %SYSTEMROOT%System32OpenSSH from my PATH and it’s working fine now 🙂

where did you remove it. how did it got added in the first place?? by cmder?? why do that if it’s wrong?? why do i need to spend 3 hours to get ssh-agent working with this software??

why do i need to google to many different github issues or PR or whatever to get any insight to enable this. as you might notice i’m going quite mental on this, at least it’s a terrible and experience full of anger

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ssh-add returns with: «Error connecting to agent: No such file or directory»

ssh-add alone is not working:

How should I use that tool?

3 Answers 3

You need to initialize the agent first.

You can do this in multiple ways. Either by starting a new shell

or by evaluating the variables returned by ssh-agent in your current shell.

I suggest using the second method, because you keep all your history and variables.

The SSH agent is not running, or the environment variables that it sets are not available in the current environment (most importantly SSH_AUTH_SOCK ), or they are set incorrectly (pointing to a dead agent).

You could start the agent in the current shell session using

or start a new shell session through the agent using

(replace fish with whatever shell you are using). But since you say that you used to be able to use ssh-add without this, it leads me to believe that you’ve accidentally killed the agent (or it has terminated due to some other reason). The error message makes me think that the SSH_AUTH_SOCK environment variable is actually set, but that ssh-add can’t find a valid communication socket at that path.

It would not surprise me if your usual way of doing things would work again if you completely logged out and logged in again, or rebooted the machine.

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Error connecting to agent no such file or directory windows 10

Use ssh-add under Windows to report Error connecting to agent: No such file or directory Environmental information. Operating system: windows 10; Terminal: Windows PowerShell problem. Error when using ssh-add. PS D:code> ssh-add-l Error connecting to agent: No such file or directory

Aug 14, 2019 · Running ssh-add from the command line on Windows 10 came back with the error. Error connecting to agent: No such file or directory. So as always, the fix is simple once you know how. Check the Windows Service “OpenSSH Authentication Agent” is set to manual and running.

May 23, 2018 · Instead I’m thrown the following error: Error connecting to agent: No such file or directory. I believe this has started happening since the latest Windows update. My set-up I’m currently booting an ssh-agent at startup, having un-commented before: call «%GIT_INSTALL_ROOT%/cmd/start-ssh-agent.cmd» I’m running: Windows 10; Latest preview/alpha

Instead I’m thrown the following error: Error connecting to agent: No such file or directory. I believe this has started happening since the latest Windows update. My set-up I’m currently booting an ssh-agent at startup, having un-commented before: call «%GIT_INSTALL_ROOT%/cmd/start-ssh-agent.cmd» I’m running: Windows 10; Latest preview/alpha

Apr 14, 2018 · Error connecting to agent: No such file or directory. Diagnostics I used procmon to discover that the failed file open operation is on a file called ‘C:tmpssh-DEhw9URW70Jzagent.24500’ which does NOT exist. In fact, the c:tmp directory doesn’t exist.

May 10, 2020 · PS C:Usersjcaro> ssh-add C:Usersjcaro.sshid_rsa-github Error connecting to agent: No such file or directory After a little research I learned that the ssh-agent was not running. The documentation on github seems to point to either using the shell provided by GitHub Desktop or adding some code to handle running the agent on load when you open bash or a Git shell.

Using Git with SSH in Windows 10 | Damir’s Corner

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Apr 19, 2022 · I’m using the built-in Windows 10 OpenSSH (C:WindowsSystem32OpenSSH) I’ve set env var GIT_SSH=C:WindowsSystem32OpenSSHssh.exe. Private key loaded into running ssh-agent service via ssh-add. From a normal command window (i.e., not a WSL bash shell) I …

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Fix: Could not open a connection to your authentication agent

Jun 14, 2019 · Fix: Could not open a connection to your authentication agent. If the issue is with your Computer or a Laptop you should try using Restoro which can scan the repositories and replace corrupt and missing files.

Oct 17, 2020 · In the course of trying to accomplish a more complicated task (involving hardware security keys and GPG keys for SSH authentication), I have run into an ornery ssh-add utility on my Windows 10 machine. Quite simply, my ssh-add fails to connect to the agent, while all other ssh functions work fine.

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You are then getting the ENOENT error. It doesn’t try the fallback connection to TCP localhost. The fix: In such cases, changing your DISPLAY variable to use the TCP syntax instead of the :0.0 syntax, can fix the issue: DISPLAY=127.0.0.1:0 ssh remote some-gui-application

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Jun 09, 2019 · 是用github给开源项目添加ssh后需要在本地将私钥添加到ssh-agent，通常网上给出的方法是在git bash界面中输入： ssh-add 私匙文件路径 然而，在windows下通常会报错： Could not open a connection to your authentication agent 解决方法： 打开git Bash命令行,依次执行 1.exec

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Info about Error Connecting To Agent No Such File

Error connecting to agent: No such file or directory So as always, the fix is simple once you know how. Check the Windows Service “OpenSSH Authentication Agent” is set to manual and running. One I did this and she ran ssh-add, I could then connect to the Pi without any prompts.

What to do about no such file or directory?

Error connecting to agent: No such file or directory So as always, the fix is simple once you know how. Check the Windows Service “OpenSSH Authentication Agent” is set to manual and running. One I did this and she ran ssh-add, I could then connect to the Pi without any prompts. Happy Hacking.

Why does ssh-add say no such file or directory?

Running ssh-add from the command line on Windows 10 came back with the error Error connecting to agent: No such file or directory So as always, the fix is simple once you know how. Check the Windows Service “OpenSSH Authentication Agent” is set to manual and running.

How to fix CMD error connecting to ssh agent?

C:epo>start-ssh-agent Found ssh-agent at 13460 Found ssh-agent socket at /tmp/ssh-vKzdrs37QYVK/agent.821 C:epo>ssh-add

/.ssh/id_rsa Error connecting to agent: No such file or directory VonC is probably right, in that you need to fix your path, but I was facing the same problem despite using the correct one.

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