KnowledgeBase Content Details

April 01, 2019

Question:

Why can I not log in to Columbus using Columbus Insight?

Answer:

Problem:

- Users are unable to login to Columbus via Columbus Insight.

- The following login failure message is displayed:



- The Columbus Insight log displays lines similar to the following:


 Failed to log onto OMERO.
Reason: Can't connect to OMERO. OMERO info not valid.

Ice.SecurityException
    reason = "IceSSL: handshake error"


 

FAQ: Where can I find the Columbus/OMERO client logs on my PC?

 

Cause:

As of Java 1.8.0_201 anonymous cipher suites for TLS are now disabled by default (Java bug ID: JDK-8211883). As a result, the Insight client connection may no longer work on any platform that uses Java 1.8.0_201 or greater.

See further details here: https://lists.openmicroscopy.org.uk/pipermail/ome-users/2019-January/007321.html

Solution:

1) Install Java version 1.8.0_192 or earlier on the client machine which is running Columbus Insight.

2) Alternatively, anonymous cipher suites for TLS can be re-enabled for the current Java version (as per the article above).  

Modify the following file with a text editor (admin required):

C:\Program Files\Java\<jre_verion>\lib\security\java.security

Remove "anon" from the list of disabled algorithms under the jdk.tls.disabledAlgorithms property.

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