Unable to install Knime extensions for 4.7.3 version

[ScottF]

Hi @booramaravind -

Take a look at this post and see if it helps (particular the second suggestion):

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