Knime Extensions Download

[Satyajit_C]

Hello, I am getting the following error while downloading extensions for R to Table and installing column expressions “Could not query update sites for missing extensions”. Can anyone help to resolve please.

[ScottF]

Hello @Satyajit_C and welcome to the forum.

You might want to check out this topic for more on the “PKIX Path buliding failed” problem - it comes up pretty often.

Help with the Extensions

Hi @Igortxu you are exactly right, this is most likely a proxy wanting to inspect the SSL (https) traffic. Here is a video that explains the issue in detail: Resolving Common KNIME Certificates Problems - YouTube For a quick and dirty fix you can probably change the update sites to use unencrypted traffic (http): Help → Install New Software… → Manage… There, double-click the active URLs and change them from https to http. Kind regards Marvin

Help with the Extensions

Hello future reader I’d like to add one more option to the ones above when facing “PKIX path building failed” issues. Again, these issues are often caused by a company proxy intercepting SSL certificates in order to monitor encrypted traffic. Possibly, the proxy’s certificate has already been preconfigured in Windows by your IT. In that case you can simply instruct KNIME to use the Windows trust store. To do so, add these two lines at the end of the knime.ini file which is locat…