Patchday: Windows 10/11 Updates (14. Juli 2026)

Am 14. Juli (zweiter Dienstag im Monat, Patchday bei Microsoft) hat Microsoft kumulative Updates für die noch unterstützten Client-Betriebssystem-Versionen von Windows 10 (mit ESU-Lizenz) und Windows 11 veröffentlicht. Hier einige Details zu diesen Updates, die Schwachstellen sowie Probleme beheben sollen.

Details zu den per Updates geschlossenen Sicherheitslücken sind im Beitrag Microsoft Security Update Summary (14. Juli 2026) beschrieben.

Updates für Windows 11

Eine Liste der Windows 11 Updates lässt sich auf dieser Microsoft-Webseite abrufen. Ich habe nachfolgend die Details herausgezogen. Für die oben erwähnten Windows 11 Version stellt Microsoft nun folgende Updates bereit.

Update KB5101650 für Windows 11 24H2-25H2

Das kumulative Update KB5101650 für Windows 11 24H2-25H2 beinhaltet Qualitätsverbesserungen sowie Sicherheitspatches. Mit diesem Update werden verschiedene Sicherheitsverbesserungen an internen Betriebssystemfunktionen vorgenommen. Microsoft listet im Supportbeitrag einige Details zu Fixes, u.a. folgende, auf.

• [Secure Boot] This update includes additional high confidence device targeting data, increasing coverage of devices eligible to automatically receive new Secure Boot certificates. Certificate deployment via Windows updates continues
• [Apps (Known issue)] Fixed: This update addresses an issue that affects certain third-party apps that use OLE Automation to interact with Microsoft Office. After installing the June 2026 security update (KB5094126), these apps might fail to launch Office or open documents.
• [Input] This update changes hotkey unregister and cleanup behavior. In rare cases, some built-in Windows experiences that rely on previous hotkey lifecycle behavior might temporarily stop responding to certain keyboard shortcuts. This issue can typically be resolved by restarting the app affected. If the issue is not resolved, report it through the Feedback Hub.
• [Networking] This update introduces a security hardening change that enforces TDI transport registration requirements. As a result, applications that use sockets over unregistered third-party TDI transports might stop working after installing this update. Registered TDI transports are not affected. For more information, see Third-party TDI transports might stop working after installing Windows security updates released on or after July 14, 2026.
• [Security] This update upgrades the curl tool in Windows to version 8.21.0 and includes security improvements that help protect your device.
• [Remote Desktop (RDP) Security] Support for SHA-2 certificate thumbprints has been added for trusted RDP publishers, with SHA-1 support retained only for backward compatibility and planned for future removal. New guidance is available for managing RDP file security through Group to help organizations reduce phishing risks by controlling which .rdp files users can open. We recommend IT administrators migrate to SHA-256 thumbprints or a stronger algorithm as soon as possible to avoid disruption.

Auch die AI-Komponenten werden aktualisiert. Dieses Update wird automatisch von Windows Update heruntergeladen und installiert, ist aber auch im Microsoft Update Catalog und per WSUS sowie WUfB erhältlich. Im Patch ist das Windows 11 Servicing Stack Update integriert. Vom Update ggf. verursachte Probleme sind im Support-Beitrag aufgeführt.

Update KB5099414 für Windows 11 23H2

Das kumulative Update KB5099414 für Windows 11 23H2 Enterprise und Education beinhaltet Qualitätsverbesserungen sowie Sicherheitspatches.

• [Secure Boot] This update includes additional high confidence device targeting data, increasing coverage of devices eligible to automatically receive new Secure Boot certificates. Certificate deployment via Windows updates continues across supported PCs and non-managed business devices in the coming months.
• [Apps (Known issue)] Fixed: This update addresses an issue that affects certain third-party apps that use OLE Automation to interact with Microsoft Office. After installing the June 2026 security update (KB5093998), these apps might fail to launch Office or open documents.
• [Country and Operator Settings Asset (COSA)] This update brings profiles up to date for certain mobile operators.
• [File Explorer (known issue)] Fixed: An issue where the OneDrive shortcut in File Explorer stops working when File Explorer is run with administrative mode.This issue might occur after installing the June 2026 security update (KB5093998).
• [Input] This update changes hotkey unregister and cleanup behavior. In rare cases, some built-in Windows experiences that rely on previous hotkey lifecycle behavior might temporarily stop responding to certain keyboard shortcuts. This issue can typically be resolved by restarting the app affected. If the issue is not resolved, report it through the Feedback Hub.
• [Networking] This update introduces a security hardening change that enforces TDI transport registration requirements. As a result, applications that use sockets over unregistered third-party TDI transports might stop working after installing this update. Registered TDI transports are not affected. For more information, see Third-party TDI transports might stop working after installing Windows security updates released on or after July 14, 2026.
• [Recycle Bin (known issue)] Fixed: This update addresses an issue where the confirmation dialog might display an internal Recycle Bin file name instead of the original file name when permanently deleting a file. This issue might occur after installing the June 2026 security update (KB5093998).
• [Security] This update upgrades the curl tool in Windows to version 8.21.0 and includes security improvements that help protect your device.
• [Remote Desktop (RDP) Security] Support for SHA-2 certificate thumbprints has been added for trusted RDP publishers, with SHA-1 support retained only for backward compatibility and planned for future removal. New guidance is available for managing RDP file security through Group to help organizations reduce phishing risks by controlling which .rdp files users can open. We recommend IT administrators migrate to SHA-256 thumbprints or a stronger algorithm as soon as possible to avoid disruption.

Dieses Update wird automatisch von Windows Update heruntergeladen und installiert, ist aber auch im Microsoft Update Catalog und per WSUS sowie WUfB erhältlich. Im Patch ist das Windows 11 Servicing Stack Update integriert. Bekannte, vom Update ggf. verursachte Probleme werden, im Support-Beitrag aufgeführt.

Windows 11 23H2 Home und Pro sind aus dem Support gefallen und haben zum 11. November 2025 letztmalig ein Update erhalten.

Updates für Windows 10

Windows 10 22H2 ist im Oktober 2025 aus dem Support gefallen und es gibt nur noch Updates im ESU-Programm. Eine Liste der Updates lässt sich auf dieser Microsoft-Webseite abrufen. Ich habe nachfolgend die Details herausgezogen.

Update KB5099539 für Windows 10 Version 21H2 – 22H2

Das kumulative Update KB5099539 enthält diverse Sicherheitsfixes und ist für Windows 10 21H2 Enterprise LTSC sowie ESU-Maschinen mit 22H2 verfügbar. Als Fixes listet der Supportbeitrag folgendes auf:

• [OLE Automation (known issue)] Fixed: Addresses a compatibility issue in OLE Automation (oleaut32.dll) that was introduced by the June 2026 security update. Some applications that use the IDispatch::Invoke method to call COM methods with BYREF parameters that share the same underlying storage might fail. These failures can include parameter marshaling errors or automation call failures. This update corrects how parameter ownership is managed and restores expected application behavior.
• [File Explorer (known issue)] Fixed: An issue where the OneDrive shortcut in File Explorer stops working when File Explorer is run with administrative mode.
• [Recycle Bin (known issue)] Fixed: This update addresses an issue where the confirmation dialog might display an internal Recycle Bin file name instead of the original file name when permanently deleting a file.
• [Input] This update changes hotkey unregister and cleanup behavior. In rare cases, some built-in Windows experiences that rely on previous hotkey lifecycle behavior might temporarily stop responding to certain keyboard shortcuts. This issue can typically be resolved by restarting the app affected. If the issue is not resolved, report it through the Feedback Hub.
• [Secure Boot]
  • This update enables dynamic status reporting for Secure Boot states in Windows Security App.
  • This update includes additional high confidence device targeting data, increasing coverage of devices eligible to automatically receive new Secure Boot certificates. Certificate deployment via Windows updates continues across supported PCs and non-managed business devices in the coming months.
• [Networking] This update introduces a security hardening change that enforces TDI transport registration requirements. As a result, applications that use sockets over unregistered third-party TDI transports might stop working after installing this update. Registered TDI transports are not affected. For more information, see Third-party TDI transports might stop working after installing Windows security updates released on or after July 14, 2026.
• [Remote Desktop (RDP) Security] Support for SHA-2 certificate thumbprints has been added for trusted RDP publishers, with SHA-1 support retained only for backward compatibility and planned for future removal. New guidance is available for managing RDP file security through Group Policy to help organizations reduce phishing risks by controlling which .rdp files users can open. We recommend IT administrators migrate to SHA-256 thumbprints or a stronger algorithm as soon as possible to avoid disruption.

Microsoft weist darauf hin, dass dieses Update Qualitätsverbesserungen am Servicing Stack (ist für Microsoft Updates verantwortlich) durchführt. Dieses Update wird automatisch von Windows Update heruntergeladen und installiert, ist aber auch im Microsoft Update Catalog und per WSUS sowie WUfB erhältlich. Beachtet die ggf. im Support-Beitrag beschriebene Hinweise zur Installation und zu ggf. bekannten Problemen.

Update KB5099538 für Windows 10 Enterprise 2019 LTS

Das kumulative Update KB5099538 (wird unter Windows 10 v1809 einsortiert, bezieht sich aber auf Windows 10 2019 Enterprise LTSC und IoT Enterprise LTSC) und beinhaltet Sicherheitsfixes sowie folgende Korrekturen.

• [Input] This update changes hotkey unregister and cleanup behavior. In rare cases, some built-in Windows experiences that rely on previous hotkey lifecycle behavior might temporarily stop responding to certain keyboard shortcuts. This issue can typically be resolved by restarting the app affected. If the issue is not resolved, report it through the Feedback Hub.
• [Secure Boot]
  • This update enables dynamic status reporting for Secure Boot states in Windows Security App.
  • This update includes additional high confidence device targeting data, increasing coverage of devices eligible to automatically receive new Secure Boot certificates. Certificate deployment via Windows updates continues across supported PCs and non-managed business devices in the coming months.
• [File Explorer (known issue)] Fixed: An issue where the OneDrive shortcut in File Explorer stops working when File Explorer is run with administrative mode.
• [Networking] This update introduces a security hardening change that enforces TDI transport registration requirements. As a result, applications that use sockets over unregistered third-party TDI transports might stop working after installing this update. Registered TDI transports are not affected. For more information, see Third-party TDI transports might stop working after installing Windows security updates released on or after July 14, 2026.
• [OLE Automation (known issue)] Fixed: Addresses a compatibility issue in OLE Automation (oleaut32.dll) that was introduced by the June 2026 security update. Some applications that use the IDispatch::Invoke method to call COM methods with BYREF parameters that share the same underlying storage might fail. These failures can include parameter marshaling errors or automation call failures. This update corrects how parameter ownership is handled and restores expected application behavior.
• [Recycle Bin (known issue)] Fixed: This update addresses an issue where the confirmation dialog might display an internal Recycle Bin file name instead of the original file name when permanently deleting a file.
• [Remote Desktop (RDP) Security] Support for SHA-2 certificate thumbprints has been added for trusted RDP publishers, with SHA-1 support retained only for backward compatibility and planned for future removal. New guidance is available for managing RDP file security through Group Policy to help organizations reduce phishing risks by controlling which .rdp files users can open. We recommend IT administrators migrate to SHA-256 thumbprints or a stronger algorithm as soon as possible to avoid disruption.

Das Update wird automatisch von Windows Update heruntergeladen und installiert, ist aber auch im Microsoft Update Catalog, per WSUS und WUfB erhältlich. Microsoft hat zudem das Service Stack Update (SSU) aktualisiert. Beachtet die im Support-Beitrag beschriebene Installationsvoraussetzungen und Hinweise auf eventuell vorhandene Probleme.

Update KB5099535 für Windows 10 Version 1607

Für Windows 10 1607 Enterprise LTSC steht das Update KB5099535 zur Verfügung. Dieses Update adressiert Sicherheitsprobleme sowie die beschriebenen Korrekturen, wird automatisch von Windows Update heruntergeladen und installiert, steht aber auch im Microsoft Update Catalog als Download zur Verfügung (nach der KB-Nummer suchen lassen). Vor der manuellen Installation muss das aktuellste Servicing Stack Update (SSU) installiert werden. Details sind im jeweiligen KB-Artikel zu finden.

Für die restlichen Windows 10 Versionen gab es kein Update, da diese Versionen aus dem Support gefallen ist. Details zu obigen Updates sind im Zweifelsfall den jeweiligen Microsoft KB-Artikeln zu entnehmen.

Ähnliche Artikel:
Microsoft Security Update Summary (14. Juli 2026)
Patchday: Windows 10/11 Updates (14. Juli 2026)
Patchday: Windows Server-Updates (14. Juli 2026)
Patchday: Microsoft Office Updates (14. Juli 2026)