Hi Nick,
Thanks for your answer.
In this particular case, dsess is actually enabled and I can see 2 servers in my replica set:
#----------------------
# DISTRIBUTED SESSION MANAGEMENT
#----------------------
# These entries together with the "dsess" stanza control how WebSEAL uses the
# DSC to store and manage sessions.
# Enable/disable use of the DSC. If this is set to yes the "dsess" stanza
# must have information about how to communicate with the DSC.
dsess-enabled = yes

Kind regards
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Kristof Goossens
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Original Message:
Sent: Tue May 21, 2019 04:33 PM
From: Nick Lloyd
Subject: DSC and VHJ
Hi Kristof,
Make sure that the instance has actually been configured to use the DSC. That error will be thrown if it is not configured to use it.
Select the instance and Edit, In the Session tab check:
[ ] Enable Distributed Session Cache
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Nick
ISAM Level II Support
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