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	2520	February 14, 2017
Problem: GPO Processing Errors (Event ID 1129) and Version Conflicts between AD and SYSVOL Community samba-ad , servicesforwindows , gpo , ad , problem , sysvol	1	16	April 10, 2026
Problem: Incorrect MDB Max Size Warning during upgrade to UCS 5.2 Community upgrade , problem , mdb , ucs-5 , ucs-5-2	1	14	April 10, 2026
How-to: Time Synchronisation for UCS in Virtual Environments Community virtualization , ucs-4 , ntp , time , howto , ucs-5 , ucs-5-2	0	8744	September 6, 2018
How-to: Configure OpenVPN Start Before Logon (SBL) / PLAP using OpenVPN GUI on Windows Community windows , openvpn , howto	1	13	April 9, 2026
Problem: 92univention-management-console-web-server.inst fails with Could not connect to keycloak server Community join , sso , keycloak , ucs-5-2	1	11	April 8, 2026
Problem: Resolving Kerberos Authentication Issues Between TrueNAS and UCS Domain Controllers Community freenas , ucs-5-2	1	9	April 8, 2026
QA: How can "Value incompatible" errors be resolved when setting UCR options? Community ucr , q-a , ucs-5	2	7	April 9, 2026
Problem: Home directories created on wrong server after update to UCS 5.2.5 Community samba , samba-ad-dc , problem , homedirectory , ucs-5-2	1	15	April 8, 2026
Problem: Some samba tools ignore `include local.conf` Supported samba , problem	1	7	April 7, 2026
Updating from PostgreSQL 11 to PostgreSQL 15 Supported postgresql , installation , ucs-5-0 , ucs-5-2	0	5784	October 18, 2023
Problem: VBScript Deprecation Warning (Event ID 4096) During Windows Logon Community ucsschool , problem , windows10 , vbs-script , windows11 , ucs-5-2	1	71	April 1, 2026
Problem: UCS join script 96univention-samba4.inst fails with LDAP ENTRY ALREADY EXISTS due to stale Samba objects Community samba , join , samba-ad-dc , problem , ucs-5-2	1	19	March 31, 2026
Keycloak App container fails to start wrong persistence storage version Community keycloak , ucs-5-2	1	14	March 31, 2026
Problem: Mailing Lists Created in Wrong Container Due to UMC Mail Module Behavior Community mail , problem , ucs-5-2 , mailinglist	1	13	March 26, 2026
QA: Can I allow usernames to just contain characters? Community import , q-a , user-management , ucs-5-2	1	8	March 27, 2026
Problem: Windows 10/11 Clients cannot discover UCS server via Network view Community fileshares , firewall , samba-ad-dc , problem , windows10 , windows-11	1	23	March 25, 2026
Problem: Failed to re-index objectSid - schoolserver RID conflict Community s4-connector , ucsschool , reject , ucs-5-2	1	18	March 20, 2026
Problem: 'No such attribute', 'ctrls': [], 'info': "attribute 'dBCSPwd': no such attribute for delete on <dn>" Community s4-connector , reject , ucs-5-2	1	4	March 20, 2026
Problem: Error “2 error(s) occurred” when opening self-service profile Community self-service , problem , ucs-5-2	2	3	March 20, 2026
UCS not affected by critical AppArmor vulnerability (CVE-2026-23268, CVE-2026-23269) Supported kernel , sudo , security	2	30	March 19, 2026
Problem: UCS Radius App Reinstall Fails Due to Missing proxy.conf.debian Community problem , freeradius	1	9	March 19, 2026
Problem: gpmc/mmc is crashing when delegation is used Community samba , gpo , ucs-5-2-4	1	27	March 17, 2026
Problem: Identifying and Locking User Accounts with Unchanged Initial Passwords in UCS-LDAP Community	1	20	March 16, 2026
How-to: Remove a uniqueMember from an LDAP Group in Nubus for Kubernetes Community ldap , howto , ldapmodify , uniquemember , opendesk , nubus-for-kubernetes	1	24	March 13, 2026
Problem: S4-Connector reject about "Object has been removed before but became visible again Community s4-connector , reject , ucs-5-2-4	1	24	March 13, 2026
QA: Why is the SSL CA certificate validity shown as expired although it expires in 2049 or later? Community ssl , q-a	1	15	March 14, 2026
QA: Why are my Nubus / OpenDesk pods and configmaps using a different prefix? Community q-a , opendesk , nubus-for-kubernetes	1	12	March 13, 2026
Problem: OpenDesk User portal tiles are not shown on the dashboard Community portal , problem , opendesk , nubus-for-kubernetes	1	18	March 13, 2026
QA: How can I access the S3 bucket in my Nubus/OpenDesk Environment? Community q-a	1	17	March 13, 2026