Hello All I have follow the step from stepes from Freeipa web + Redhat to prepare the replicat by commands : DNS+Reverse : OK On IPA Master : ipa-replica-prepare --password=XXXXX replicat.example.com Scp the Gpg file from the Master to slave/replicat as root to /var/lib/ipa On IPA Replicat : ipa-replica-install --password=XXXXX /var/lib/ipa/replica-fil.gpg --setup-kra --setup-ca --setup-dns --no-forwarders After several secondes, the installation stop on stage : [1/28] Configuring centificat server instaance The first ERROR line: ipaserver.install.dogtaginstance: CRITICAL Failed to configure CA instance: Command '/usr/sbin/pkispanw -s CA -f /tmp/tmMg7KE' returned non-zero exist statut 1 The second ERROR line: ipaserver.install.dogtaginstance: CRITICAL See installation.... The third ERROR line : ipaserver.install.dogtaginstance:CRITICAL [error] RuntimeError: CA configuration failed. My IPA Master was in Centos 7.3 IPA:v4.5.0 The replica server in Centos 7.6 IPA:v4.6.4 Can you help to resolve this pb ? Regards Mr Karim Bourenane