Matlab technical issue

Partial disruption of SMTP with STARTTLS (outgoing mail)

We would like to inform you that the counter of our SCC Service Desk at Campus North (Building 441/442) will be closed next week, from 26.05.2020 to 30.05.2025.

We would like to inform users of Microsoft Outlook under Windows about changes made by Microsoft.
All these circumstances can lead to users using the “wrong” Outlook.
AFFECTED
KIT mailbox: Users with Outlook for Windows on Windows 10 or Windows 11 systems.

DESCRIPTION
The “NEW Outlook for Windows” is becoming more and more widespread from Microsoft and is included as standard in Windows 11. With the Windows security updates in February 2025, it will now also be installed automatically on Windows 10 computers.

IMPORTANT
KIT mailboxes cannot be integrated as Exchange accounts in the “NEW Outlook for Windows” and should not be integrated there as IMAP accounts!

Windows 10: A group policy (GPO) has already been created in the KIT Active Directory (KIT-AD) to prevent the installation of the “NEW Outlook for Windows” under Windows 10 for everyone at KIT.

Windows 11: Unfortunately, there is no way to prevent the installation of the “NEW Outlook for Windows” on Win11, but it can certainly be removed!

=> https://learn.microsoft.com/en-us/microsoft-365-apps/outlook/get-started/control-install#block-new-outlook-preinstall-on-windows

NOTE on renaming the Outlook versions
The “NEW Microsoft Outlook for Windows” will be renamed from “Outlook (new)” to “Outlook” in the course of February 2025. Depending on the version, the original Outlook version will be given the suffix “(classic)”.

SUPPORT
Here you will find information and screenshots to help users identify the “correct” Outlook version.

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)