Cannot deinstall or reinstall Extensions Unable to read - PKIX path building failed:

Hello All,

I´m quite new in the KNIME Environment. So I´ve take over some flows from a colleague in my company. The first weeks everything runs fine.

I wanted to add a python node in my flow, but sice I´ve tried this, plus to install the extensions, something went wrong, So I decided to reinstall the application but now I´m facing this error massage.

I´m not sure what to do, so would be great if anyone can assist and help here.

short note.

I´m working in an company environment, maybe someone from the IT- can install or run this app as an administrator, to solve this issue. I would very thanksfull or additional help

BR Dominik