{"id":5189,"date":"2026-08-11T17:40:06","date_gmt":"2026-08-11T17:40:06","guid":{"rendered":"https:\/\/windowsreport.com\/de\/windows-11-kb5121003-kb5121000-kb5120240-patchday-updates-fur-august-2026-veroffentlicht\/"},"modified":"2026-08-11T17:50:45","modified_gmt":"2026-08-11T17:50:45","slug":"windows-11-kb5121003-kb5121000-kb5120240-patchday-updates-fur-august-2026-veroffentlicht","status":"publish","type":"post","link":"https:\/\/windowsreport.com\/de\/windows-11-kb5121003-kb5121000-kb5120240-patchday-updates-fur-august-2026-veroffentlicht\/","title":{"rendered":"Windows 11 KB5121003, KB5121000 &amp; KB5120240 August 2026 Patch-Tuesday-Updates ver\u00f6ffentlicht"},"content":{"rendered":"\n<p>Es ist der zweite Dienstag des Monats, was bedeutet, dass der Patch Tuesday f\u00fcr Windows-11-Nutzer da ist. Microsoft hat nun seine August-2026-Patch-Tuesday-Updates f\u00fcr mehrere unterst\u00fctzte Windows-11-Versionen ver\u00f6ffentlicht. Die neuesten Sicherheitsupdates decken Windows 11 23H2, 24H2, 25H2 und 26H1 ab. Microsoft hat zudem wichtige Sicherheitsverbesserungen und weitere Arbeiten im Zusammenhang mit Secure Boot-Zertifikaten integriert.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-windows-11-24h2-and-25h2-get-kb5121003\">Windows 11 24H2 und 25H2 erhalten KB5121003<\/h2>\n\n\n\n<p>F\u00fcr Windows 11 24H2 und 25H2 <a href=\"https:\/\/support.microsoft.com\/en-us\/servicing\/os\/windows-11\/2026\/08\/kb5121003-windows-11-24h2-25h2-security-update\" target=\"_blank\" rel=\"noreferrer noopener\">hat Microsoft KB5121003 ver\u00f6ffentlicht<\/a>. Das Update aktualisiert beide Versionen auf die Betriebssystembuilds 26100.9168 bzw. 26200.9168. Laut Microsoft enth\u00e4lt das Paket Sicherheitsverbesserungen sowie zus\u00e4tzliche Secure Boot-\u00c4nderungen. Das Unternehmen erweitert die Ger\u00e4tezielgruppendaten f\u00fcr PCs, die automatisch neue Secure Boot-Zertifikate erhalten k\u00f6nnen. Die Bereitstellung der Zertifikate wird \u00fcber Windows Update auf unterst\u00fctzten Verbraucher-PCs und berechtigten, nicht verwalteten Unternehmensger\u00e4ten fortgesetzt.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-windows-11-26h1-gets-kb5121000\">Windows 11 26H1 erh\u00e4lt KB5121000 <\/h2>\n\n\n\n<p>Weiter geht es mit <a href=\"https:\/\/support.microsoft.com\/en-us\/servicing\/os\/windows-11\/2026\/08\/kb5121000-windows-11-26h1-security-update\" target=\"_blank\" rel=\"noreferrer noopener\">Windows 11 26H1, das KB5121000<\/a> als Patch-Tuesday-Update vom August 2026 erh\u00e4lt und das Betriebssystem auf OS Build 28000.2704 bringt. Microsoft gibt an, dass dieses Update <a href=\"https:\/\/msrc.microsoft.com\/update-guide\/releaseNote\/2026-Aug\" target=\"_blank\" rel=\"noreferrer noopener\">421 Microsoft-CVEs behebt<\/a>. Es verbessert au\u00dferdem die TPM-Wartungsberichterstattung, indem es sicherstellt, dass der EK-Zertifikatstatus genau gemeldet wird.<\/p>\n\n\n\n<p>Das Update erweitert zudem die Zielgruppenabdeckung f\u00fcr Secure Boot-Zertifikate. Laut Microsoft wird die Bereitstellung der Zertifikate in den kommenden Monaten auf unterst\u00fctzten Ger\u00e4ten fortgesetzt.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-windows-11-23h2-gets-several-quality-improvements\">Windows 11 23H2 erh\u00e4lt mehrere Qualit\u00e4tsverbesserungen<\/h2>\n\n\n\n<p><a href=\"https:\/\/support.microsoft.com\/en-us\/servicing\/os\/windows-11\/2026\/08\/kb5120240-windows-11-23h2-security-update\" target=\"_blank\" rel=\"noreferrer noopener\">Windows 11 23H2 erh\u00e4lt KB5120240<\/a>, das das Betriebssystem auf OS Build 22631.7517 bringt. Dieses Paket enth\u00e4lt neben Sicherheits\u00e4nderungen mehrere Qualit\u00e4tsverbesserungen. Microsoft hat das COSA-Profil f\u00fcr SolNet-Mobile aktualisiert, um neuere Betreibereinstellungen zu unterst\u00fctzen. Das Update verbessert zudem die Zuverl\u00e4ssigkeit f\u00fcr Ger\u00e4te, die \u00fcber MDM verwaltet werden, wenn ein MDM-Zertifikat abl\u00e4uft.<\/p>\n\n\n\n<p>Auch der Dateiversionsverlauf erh\u00e4lt Aufmerksamkeit. Microsoft erkl\u00e4rt, dass Sicherungen auf SMB-Netzwerkfreigaben jetzt bei geplanten Vorg\u00e4ngen zuverl\u00e4ssiger sein sollten. Das Emoji-Panel erh\u00e4lt ebenfalls eine bemerkenswerte \u00c4nderung. Windows 11 23H2 unterst\u00fctzt jetzt GIPHY, nachdem die Tenor-API von Google abgek\u00fcndigt wurde.<\/p>\n\n\n\n<p>Microsoft setzt die Einf\u00fchrung von Secure Boot-Zertifikaten auf unterst\u00fctzten Windows-Ger\u00e4ten weiter fort. Nutzer, die bereits fr\u00fchere Updates installiert haben, erhalten nur die neuen Komponenten, die in diesen Paketen enthalten sind.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Es ist der zweite Dienstag des Monats, was bedeutet, dass der Patch Tuesday f\u00fcr Windows-11-Nutzer da ist. Microsoft hat nun seine August-2026-Patch-Tuesday-Updates f\u00fcr mehrere unterst\u00fctzte Windows-11-Versionen ver\u00f6ffentlicht. Die neuesten Sicherheitsupdates decken Windows 11 23H2, 24H2, 25H2 und 26H1 ab. Microsoft hat zudem wichtige Sicherheitsverbesserungen und weitere Arbeiten im Zusammenhang mit Secure Boot-Zertifikaten integriert. Windows 11 [&hellip;]<\/p>\n","protected":false},"author":2314,"featured_media":5190,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_enabled_clarity":"","footnotes":""},"categories":[1797],"tags":[],"work":[],"class_list":["post-5189","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-anleitung"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.3 (Yoast SEO v28.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Windows 11 KB5121003, KB5121000 &amp; KB5120240 August 2026 Patch-Tuesday-Updates ver\u00f6ffentlicht<\/title>\n<meta name=\"description\" content=\"Windows 11 August 2026 Patch Tuesday bringt KB5121003, KB5121000 und KB5120240 mit Sicherheits-, Secure Boot- und Qualit\u00e4tsverbesserungen\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/windowsreport.com\/de\/windows-11-kb5121003-kb5121000-kb5120240-patchday-updates-fur-august-2026-veroffentlicht\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Windows 11 KB5121003, KB5121000 &amp; 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