Knowledge Base

Supported How-tos and guides provided by the community and the Univention team. Cool Solutions Community How-tos and guides provided by the community and the Univention team.

Topic	Replies	Views	Activity
About the Knowledge Base category Knowledge Base	0	2534	February 14, 2017
Problem: Wire – Display Name does not update after user rename in LDAP Community ucs-5-2 , nubus-for-kubernetes	1	6	October 27, 2026
Problem: Kelvin REST API Container Reports Unhealthy Community proxy , kelvin-api , ucs-5-2-6	1	6	October 27, 2026
Problem: AD Connector services repeatedly restarting Community	1	20	October 26, 2026
Problem: Nextcloud Security Fix for CVE-2026-109618 & CVE-2026-109619 Vulnerability on UCS 5.2 Community nextcloud , docker , security , php , problem , ucs-5-2	1	136	October 22, 2026
Problem: UCS 5.2 - Remediation of CVE-2026-109618 & CVE-2026-109619 (PHP2Shell Vulnerability) Community security , php , apt , problem , ucs-5-2	1	97	October 22, 2026
PHP remote code execution vulnerabilities in UCS CVE-2026-109618 and CVE-2026-109619 (php2shell) Supported security , php , simplesamlphp	2	572	October 21, 2026
Problem: Misleading PAM_functional_account messages during Dovecot authentication Community mail , open-xchange , dovecot , problem , pam , ucs-5-2	1	17	October 21, 2026
Eight intermediate certificate authorities compromised Community	2	56	October 21, 2026
HowTo: Install and use py-spy on UCS Community flamegraph , py-spy	1	34	October 21, 2026
Problem: Printer Driver Installation Fails on UCS – Type 4 Driver Incompatibility with Samba Community windows , samba-ad-dc , printer , driverupload , problem , ucs-5-2	1	34	October 20, 2026
Problem: OX Shared Account access delayed in large environments Community udm , umc , open-xchange , problem , opendesk , nubus-for-kubernetes , shared_accounts	1	18	October 19, 2026
Problem: OX Connector 4.0.0 fails after an interrupted upgrade Community upgrade , problem , ox-connector , ucs-5-2	2	32	October 20, 2026
Problem: SAML SP Setup FileNotFoundError Community join , sso , ucs-5-2	1	30	October 19, 2026
Problem: S4 Connector neu initialisieren Supported ucs-4 , s4-connector , problem , ucs-5	0	2523	January 18, 2017
Problem: UCS Office 365 Connector MSGraphError - HTTP Response Status 404 Community office-365 , networking , problem , ucs-5-2	1	31	October 16, 2026
Problem: OX Connector - Context Provisioning Fails with “Authentication Failed” Community open-xchange , app-center , problem , ox-connector , ucs-5-2	1	27	October 16, 2026
Problem: AD-Connector synchronization fails with (ALREADY_EXISTS) after manual object move in AD Community umc , ad-connection , ldap , localmapping , ucs-5-2	1	31	October 16, 2026
Problem: LDAP Replication: "Can't Contact LDAP Server" and "Broken Pipe" Warnings Community listener , ldap , problem , ucs-5-2	1	42	October 15, 2026
Problem: Nextcloud Extended Attributes disappear after failed App Center installation Community app-center , nextcloud , problem , extended-attributes , ucs-5-2	2	36	October 15, 2026
Problem: OX Connector Failure After Installing or Upgrading to Provisioning Service Community upgrade , sqlite , ox-connector , ucs-5-2 , provisioning-service	1	52	October 13, 2026
Problem: Missing Schools in the Users Module in UCS@school Community umc , ucsschool , problem , ucs-5-2	1	33	October 13, 2026
How-to: Redirect Email Between Shared IMAP Folders Community mail , postfix , ucs-5-2	1	32	October 13, 2026
Problem: AD Connector synchronization fails with ldap.DECODING_ERROR Community ad-connection , problem	1	29	October 14, 2026
Problem: Office 365 Connector join script fails with HTTP 403 from Keycloak Community office-365 , proxy , firewall , problem , ucs-5	1	26	October 14, 2026
QA: Why Do Shares Remain Visible and Inaccessible After Samba Migration? Community fileshares , samba-ad-dc , gpo , q-a , memberserver , ucs-5-2	1	33	October 13, 2026
Problem; Keycloak SSO – Seamless Login Fails / Manual Login Prompt Appears Community kerberos , windows , sso , keycloak	1	34	October 12, 2026
QA: Why is the OX resource manager field missing in UMC on UCS 5.2? Community open-xchange , q-a	1	36	October 13, 2026
QA: Why is my Univention Bugzilla account registration canceled immediately? Community q-a , bugzilla	1	37	October 13, 2026
QA: What happend to policies/mailquota Community mail , q-a , ucs-5 , ucs-5-2	1	37	October 13, 2026