Please reconnect using TLS security mechanisms.

[ramabhik]

ERROR Upload (legacy) 0:165 Execute failed: Sorry, cleartext sessions and weak ciphers are not accepted on this server.
Please reconnect using TLS security mechanisms.

[marvin_kickuth]

Dear @ramabhik

thanks for reaching out.
It looks to me like you are running a KNIME workflow that uploads a file to a server that uses an untrusted certificate.

This is something the server owner needs to change, or you will have to manually trust it? In the second case, does it suffice to tick the box at the bottom of the shown window?
Otherwise we will have to import the certificate into KNIME. For that you should ask the server maintainer to provide you the certificate (.pem file). Then import it analogue to this post:

Adding root certificate to KNIME

I seem to have solved this. I referenced the incorrect keystore in step 2 above. This worked: keytool -import -alias our_root_cert -keystore “C:\Program Files\KNIME\plugins\org.knime.binary.jre.win32.x86_64_1.8.0.252-b09\jre\lib\security\cacerts” -file our-root-cert.pem There is also this solution - editing knime.ini to tell Eclipse to use the Windows certficates, although I did not test it myself:

Kind regards
Marvin

[marvin_kickuth]

Hi @ramabhik

did you manage to solve this issue or do you need further help? If this is resolved, what ended up working for you?

Kind regards
Marvin