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Stand: 09.11.2025 08:09:19

Incidents

 2025-08-11 20:00

Performance Issues Firewall Stufe-2 and Extranet


DescriptionPerformance issues have been observed since the firewall software upgrade on August 11, 2025.

Individual connections require too many resources, which disadvantages other users.
These users experience higher latencies, which can lead to slow websites, file transfers, etc.

As a first step, the software update suggested by the manufacturer was installed on September 16. This has not yet led to any actual improvement. Troubleshooting together with the manufacturer is ongoing.
Affected usersUsers of Firewall Stufe 2 (Area D) und Extranet (Area B)
Exists since2025-08-11 20:00

Maintenance

  2025-10-15 00:00 - 2025-11-12 23:59

Windows 10&11: Removal the systems from KIT Active Directory (end of support) - Client-Upgrades NECESSARY


UPDATE, November 6, 2025
The affected systems will be deactivated from the KIT Active Directory on November 12, 2025.
see Announcement of 6.11.25, "KIT Active Directory: Deactivation of all computer objects with unsupported operating systems"

DESCRIPTION
On October 15, 2025, all affected end devices will be removed from the KIT Active Directory (KIT-AD) and therefore decommissioned.

CAUSE
End of life (security) support for Windows 10/11 on 14.10.2025

AFFECTED
Windows 10/11 - specifically: Win10 LTSB 2015, Win10 22H2, Win11 22H2

IMPORTANT
Systems must be upgraded or moved to quarantine networks in advance.

INFORMATION at ITEK on 19.03.25 - presentation
The (K)IT expert group was informed in detail about the necessary measures and assistance (script, GPO for the upgrade) was provided.
On the one hand, a Powershell script (find_EOL_OS_in_OU.ps) is available to the ITB and IT administrators, which provides information about the systems still running Windows 10 in the KIT-AD.
Furthermore, the GPO “SCC-WSUS-Upgrade_to_latest_Win11” can be used in the OU to install an upgrade to Win11 (>22H2) on affected systems.

IT admins are requested to check the hardware of the systems to be updated before the changeover.
If systems cannot be upgraded to Win11 (>22H2), these systems must be moved to quarantine networks.
Stand: 09.11.2025 08:09:20

Announcements

 2025-03-20 13:00

Microsoft: OneNote for Win10 disabled - migration of notebooks necessary (UPD, 21.07.25)


UPDATE, 21.07.2025
Fix issues when you can't sync OneNote

DESCRIPTION
End of support for OneNote for Win10 will be reached in October 2025.

AFFECTED / IMPACT
There will be no more Microsoft support for MS OneNote for Win10 from the specified date. Security patches will no longer be available, so it will be necessary to switch to a new version.

TODO by users/admins
Migration of notebooks to current OneNote version

PLEASE NOTE
http://scc.kit.edu/en/services/ms-teams-changes.php#onenote4w10

 2025-01-07 11:14

Note: Misbehavior between Windows 11 Update 22H2 in conjunction with specific network switch type


UPDATE, 07.01.25
In 2024, some components could be replaced, but there are still components in use where the malfunction could occur.
_ _ _

A misbehavior has been detected between a network switch type used at KIT South Campus and a Windows 11 update (version 22H2). Due to this misbehavior, the network port on the switch is automatically switched off.
As a result, the network connection or network access for the connected device is no longer available.
To enable network access, the data socket used must be communicated to the IT representative / IT admin of the OU so that he can apply for enabling via the SCC network team.

WORKAROUND
To prevent the network port from being switched off, the LLDP service can be disabled under Windows. This can be done manually (computer-specific) under "Network adapter properties". Furthermore, the SCC provides the group policy "SCC-FMC-LLDP_disable", which can be linked to the computer accounts and automatically disables LLDP under Windows. Unlocking of already blocked ports can be requested from the network team via the IT representative/IT admin of the OU.

AFFECTED
Windows 11 Nutzer mit Updatestand 22H2 (und voraussichtlich höher) in Verbindung mit spezifischem Netzwerk-Switchtyp

TECHNICAL DETAILS
As of Windows 11 update level 22H2, sending Link Layer Discovery Protocol (LLDP for short) packets on a specific type of switching causes a network loop detection service to trigger on the switch, automatically blocking the network port.

(translated with DeepL.com)

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