SFTP Zappysys Error message: Test Failed: Negotiation Failed. Disconnected by the server. Key Exchange failed.

Daniel Calbimonte

January 22, 2021 15:17 Updated

Problem

When you are in SSIS trying to create the ZappySys SFTP Connection and you test it, you receive any of the following error messages:

Negotiation Failed. Disconnected by the server. Key Exchange failed.

Negotiation failed. Server signature is not valid

Negotiation failed. Requested key size is not supported

Solution

It can be a problem with the key. Try to change below settings see any of them helps ?

First Change Minimum Server Key Size to 0 or 512 or 1023 or 1024 or 2048 or 4096 and click Test Connection - See any value helps
--- OR ---
If above Minimum Key Size Fix doesn't help then try to change allowed algorithms / ciphers from blank value (i.e. default) to "any" like below and then click Test Connection?

Contact Us

If you have more question(s) feel free to contact us via Live chat or email to support@zappysys.com