# SSH can't connect if multiple authentication methods are required (regression)

**URL:** https://www.finalbuilder.com/forums/t/ssh-cant-connect-if-multiple-authentication-methods-are-required-regression/7733
**Category:** Bugs
**Created:** [October 29, 2025, 6:09pm UTC](https://www.finalbuilder.com/forums/t/ssh-cant-connect-if-multiple-authentication-methods-are-required-regression/7733 "2025-10-29T18:09:43Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Boramis](https://www.finalbuilder.com/forums/user_avatar/www.finalbuilder.com/boramis/32/2446_2.png) [@Boramis](https://www.finalbuilder.com/forums/u/Boramis)
#### Post date: [October 29, 2025, 6:09pm UTC](https://www.finalbuilder.com/forums/t/ssh-cant-connect-if-multiple-authentication-methods-are-required-regression/7733/1 "2025-10-29T18:09:43Z")

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We have an SSH server that requires authenticating with both a password and a private key. After we upgraded from FinalBuilder 8.0.0.3364 to 8.5.0.3514 the “SSH Open Connection” action started failing with this log:

> Initiating SSH connection to [host] for build on port 22  
> Server key received, fingerprint [hash]  
> Server software identified itself as: [host]  
> Loading private key file [privatekey].ppk  
> Attempting login with private key file [privatekey].ppk  
> **Authentication was partially successful, but server requires additional authentication with: ‘password’.**

An “SFTP Connect” action with the same configuration succeeds:

> Setting Authtypes to keyboard and password  
> private key format kfOpenSSH  
> Loading private key file [privatekey].ppk  
> Adding public key to AuthTypes  
> Received Server Key [hash].
> 
> Starting Authentication…  
> Attempting Authentication type: [Public Key]  
> Attempting Authentication type: [Password]  
> Authenticated OK.

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### Author: ![Vincent](https://www.finalbuilder.com/forums/user_avatar/www.finalbuilder.com/vincent/32/938_2.png) [@Vincent](https://www.finalbuilder.com/forums/u/Vincent)
#### Post date: [October 29, 2025, 10:15pm UTC](https://www.finalbuilder.com/forums/t/ssh-cant-connect-if-multiple-authentication-methods-are-required-regression/7733/2 "2025-10-29T22:15:06Z")

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Hi Zoë

I have added support for this according to the client libary documentation, however I haven’t been able to test this yet (out of the office).

[https://downloads.finalbuilder.com/downloads/finalbuilder/850/FB850\_3520.exe](https://downloads.finalbuilder.com/downloads/finalbuilder/850/FB850_3520.exe)

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### Author: ![Boramis](https://www.finalbuilder.com/forums/user_avatar/www.finalbuilder.com/boramis/32/2446_2.png) [@Boramis](https://www.finalbuilder.com/forums/u/Boramis)
#### Post date: [October 30, 2025, 1:50pm UTC](https://www.finalbuilder.com/forums/t/ssh-cant-connect-if-multiple-authentication-methods-are-required-regression/7733/3 "2025-10-30T13:50:01Z")

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Thanks Vincent, the new build does indeed fix the issue. Thank you for the speedy fix!