If you are using ADFS with Domino as a Single Sign-On solution, and you get a call from a friendly user telling you that Single Sign-On stopped working, check if you are seeing the following error on the HCL Domino server console: SECCheckAndParseSAMLResponse> VerifyAssertionSignature : Document has been modified or corrupted since signed! (signature)

After implementing Kerberos Authentication protocol for HCL Connections, as described in the official documentation (HCL Connections and IBM WebSphere documentation) and restarting the whole environment, the “synchronization status” of the Nodes in the IBM WebSphere ISC Console appeared to be “unknown”. All the HCL Connections Applications were running, there were no errors in GUI and the SSO was working without any issues.

One of my customers wanted to migrate the HCL Traveler Database from IBM DB2 to Microsoft SQL. The customer is using Microsoft SQL for all other applications, which is set up with redundancy and high availability in mind, so this was a sensible choice, opposed to running a single instance of DB2.