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Question

SFTP Algorithm Negotation Fail

  • January 20, 2026
  • 0 replies
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rosscollicutt
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Hi all, 

I’m trying to connect to an SFTP operated by one of our vendors with an Automation Action but when trying to connect it just gives me an ‘Algorithm negotiation failed’ error with no other output.

This page (FME Flow Troubleshooting: Automations – FME Support Center) says it’s an issue with the key exchange or host key algorithms not matching. They seem to have overlapping algorithms but I’m not sure how to definitively check what FME is using. 

Anyone had this issue?