Latest Knowledge Base topics

Topic	Replies	Views	Activity
Add Subject Alternative Names to existing Certificate Supported ucs-4 , ssl , certificates , san , ucs-5	0	14368	December 1, 2017
Compress LDAP Transaction Log Community ldap , problem , nubus-for-kubernetes	1	28	January 26, 2026
Problem: Password Reset Fails for Locked Users with AD Connector in UCS@School Community ad-connection , ucsschool , problem , password-reset	1	11	January 23, 2026
QA: Is it possible to use WebAuthn passwordless authentication in UCS? Community login , q-a , keycloak , passwordless , passkey	2	20	January 23, 2026
How is a UCS license installed? Supported ucs-3 , udm , ucs-4 , lizenz , key , license , ucs-5	0	4149	September 16, 2016
Problem: No VGA or iRMC Console Output After Installing UCS 5.2.3 on Fujitsu TX1330 Community grub , console , boot , problem , ucs-5-2	1	10	January 22, 2026
Q&A: Can I choose, the login theme in the keycloak settings? Community login , keycloak	1	32	January 20, 2026
HowTo: How can a custom logo be configured? Community login , keycloak , css , customize	1	30	January 20, 2026
Cool Solution - Sync SSH Keys via LDAP Cool Solutions cool-solution , ucs-5-0 , ucs-5-2	4	1520	January 20, 2026
Slow RADIUS Authentication for WiFi Networks with UniFi Access Points Community ucsschool , ldap , problem , freeradius	1	114	January 19, 2026
Problem: A popup is shown in the right corner in UMC/Portal after upgrade Community umc , upgrade , ucs-5-2	1	13	January 19, 2026
Problem: Ad-Connector reject for windows clients Community ad-connection , reject , ucs-5-2	1	17	January 15, 2026
Problem: Display error for group memberships Community umc , ucsschool , group , ucs-5-0 , ucs-5-2	1	5	January 15, 2026
Problem: Sysvol-Replikation is not working anymore Community ucsschool , sysvol , ucs-5-2	1	16	January 15, 2026
Problem: OTP/2FA should work with adjusted 2FA and enforced 2FA Community keycloak , ucs-5-2 , otp , 2fa	1	22	January 15, 2026
QA: UCS 5: Portal and Management Interfaces Community umc , portal , q-a , ucs-5 , ucs-5-2	1	26	January 13, 2026
Problem: Computers Do Not Keep Their Assigned IP Address Community dhcp , networking , ip , problem , ucs-5	1	25	January 14, 2026
QA: What Is the Best DHCP Setup for Notebooks with Both LAN and WLAN Interfaces? Community dhcp , ucsschool , q-a , ucs-5	1	20	January 14, 2026
Problem: Default structured-logging with UCS 5.2-4 Community structured-logging , ucs-5-2-4	1	47	January 12, 2026
Squid Proxy Is Very Slow After User Login (NTLM / Worker Bottleneck) Community proxy , ucsschool , squid	1	20	January 12, 2026
Problem: Apache2 Returns “Not Found” for Login Page After Certificate Renewal Community ssl , apache , problem , ucs-5 , appcenter , ucs-5-2 , curl	1	22	January 9, 2026
Problem: S4 Connector neu initialisieren Supported ucs-4 , s4-connector , problem	0	2464	January 18, 2017
Q&A: Is it enough to run samba4 joinscripts on a school server, to get all samba4 objects? Community samba-ad-dc , ucsschool , q-a	1	10	January 9, 2026
Problem: DHCP Server Does Not Start on a ucs@school Replica Server - objectClass=dhcpServer Community ucr , ucs-4 , dhcp , problem , ucs-5 , ucs-5-2	0	769	January 22, 2020
Q&A: Is Microsoft LAPS Compatible with UCS? Community q-a , ucs-5 , microsoft , laps	2	20	January 8, 2026
Problem: /boot Partition Runs Out of Space Due to Old Kernels Community kernel , boot , problem , ucs-5-2	2	37	January 7, 2026
Q&A: Which ucr variable for secure ad-connector connection via port 636 Community ssl , ad-connection , ucs-5-2	1	10	January 5, 2026
Problem: SYSVOL Synchronization Fails Between Primary and Backup DC Community problem , sysvol , netlogon , samba4 , ucs-5-2	1	25	January 2, 2026
How-to: Best Practices for Upgrading to UCS 5.2 Community update , upgrade , howto , univention-upgrade , ucs-5-2	1	122	January 2, 2026
DNS Server on DC does not resolve external name Supported ucs-4 , dns , ddos , recursive , query , ip , subnet	0	6351	January 29, 2015