Close the Dreamweaver application.
Last updated on
Jul 11, 2022
Learn how to troubleshoot SFTP server connection issues in Dreamweaver.
Be it old protocols configured within SFTP servers or other error messages, troubleshoot your SFTP connection issues using these workarounds.
If your server is configured with deprecated OpenSSH protocols, re-enable legacy RSA/SHA1 in the Dreamweaver config file as a workaround to establish the connection. Follow the steps below:
?$png$&jpegSize=200&wid=980 "Error message for macOS")
?$png$&jpegSize=100&wid=487 "Error message for Windows")
The solution mentioned above is a stopgap measure until legacy implementations are upgraded or reconfigured with compatible key types. Write to your hosting providers or server admins and request an upgrade to supported algorithms compatible with OpenSSH version 8.8.
If the issue persists, do the following to make necessary changes in the config file:
Dreamweaver is enabling the recommended RSA/SHA1 algorithm, as suggested by OpenSSH. Adobe is not responsible for any changes made by the user to customize the settings in the SFTP config file.
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If an error is related to any mismatch of algorithms, add a server-supported algorithm(as mentioned in the error log) to the config file (within the SFTP folder mentioned in step 1). For example:
Error
Resolution
Unable to negotiate with <IP> port <port no>:
no matching key exchange method found.
Their offer: diffie-hellman-group14-sha1,
diffie-hellman-group1-sha1
Add any of the below algorithms to the config file:
KexAlgorithms +diffie-hellman-group1-sha1
or
KexAlgorithms +diffie-hellman-group14-sha1
Support for ssh-dss (DSA) host and public key algorithms are no longer supported by default. If you are currently using the DSA host or keys, re-enable them by adding the following to SFTP config.
HostkeyAlgorithms +ssh-rsa,ssh-dss
PubkeyAcceptedAlgorithms +ssh-rsa,ssh-dss
If you see the following error message: "Failed to read the contents of XML Resource: IDD_SSH_KEY_CHANGE_DIALOG", follow the steps below as a workaround:
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Close the Dreamweaver application.
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Navigate to the following location:
- macOS: ~/Library/Application Support/Adobe/Dreamweaver xxxx/en_US/Configuration
- Windows: C:\Users\[user name]\AppData\Roaming\Adobe\Dreamweaver xxxx\en_US\Configuration
xxxx is the version of Dreamweaver. If you are using Dreamweaver 2021 running on Windows, then your folder location reads:C:\Users\[User name]\AppData\Roaming\Adobe\Dreamweaver 2021\en_US\Configuration
- macOS: ~/Library/Application Support/Adobe/Dreamweaver xxxx/en_US/Configuration
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Right-click the ssh_hosts file, and rename the file. For example, ssh_hosts_old.
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Relaunch Dreamweaver and connect to your SFTP server.
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