{"id":5214,"date":"2026-08-12T08:53:10","date_gmt":"2026-08-12T08:53:10","guid":{"rendered":"https:\/\/windowsreport.com\/de\/owa-light-ist-nach-dem-exchange-update-von-microsoft-im-august-endgultig-verschwunden\/"},"modified":"2026-08-12T08:53:10","modified_gmt":"2026-08-12T08:53:10","slug":"owa-light-ist-nach-dem-exchange-update-von-microsoft-im-august-endgultig-verschwunden","status":"publish","type":"post","link":"https:\/\/windowsreport.com\/de\/owa-light-ist-nach-dem-exchange-update-von-microsoft-im-august-endgultig-verschwunden\/","title":{"rendered":"OWA Light ist nach dem Exchange-Update von Microsoft im August endg\u00fcltig verschwunden"},"content":{"rendered":"\n<p>Microsoft hat die Sicherheitsupdates f\u00fcr Exchange Server vom August 2026 f\u00fcr Exchange Server Subscription Edition, Exchange Server 2019 und Exchange Server 2016 ver\u00f6ffentlicht.<\/p>\n\n\n\n<p>Die <a href=\"https:\/\/techcommunity.microsoft.com\/blog\/exchange\/released-august-2026-exchange-server-security-updates\/4543951\" target=\"_blank\" rel=\"noopener noreferrer\">neuen Exchange Server-Sicherheitsupdates<\/a> beheben mehrere Sicherheitsl\u00fccken, wobei die meisten Korrekturen auf Spoofing und Rechteausweitungen abzielen.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-owa-light-is-now-permanently-disabled\">OWA Light ist jetzt dauerhaft deaktiviert<\/h2>\n\n\n\n<p>Die Sicherheitsupdates vom August deaktivieren Outlook Web App Light in Exchange Server dauerhaft.<\/p>\n\n\n\n<p>Microsoft k\u00fcndigte die Einstellung der Funktion bereits vor mehreren Jahren an und erinnerte Exchange-Administratoren im Juli daran, dass OWA Light ab August 2026 deaktiviert wird.<\/p>\n\n\n\n<p>Organisationen, die die neuesten Exchange Server-Updates nicht installieren k\u00f6nnen, sollten OWA Light manuell deaktivieren, um potenzielle Sicherheitsrisiken zu verringern.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-known-exchange-hybrid-issue-remains\">Bekanntes Exchange-Hybridproblem bleibt bestehen<\/h3>\n\n\n\n<p>Das August-Release enth\u00e4lt au\u00dferdem ein bekanntes Problem, das Microsoft erstmals im Juni 2026 dokumentiert hat.<\/p>\n\n\n\n<p>Es betrifft Exchange Server Subscription Edition, Exchange Server 2019 und Exchange Server 2016 in bestimmten Hybridkonfigurationen mit gemeinsam genutzten Postf\u00e4chern, die in Exchange Online gehostet werden, sowie lokal gehosteten Postf\u00e4chern.<\/p>\n\n\n\n<p>Das Problem kann auftreten, wenn Organisationen die Berechtigungen \u201eSenden als\u201c oder \u201eSenden im Auftrag von\u201c verwenden und gleichzeitig MessageCopyForSentAsEnabled oder MessageCopyForSendOnBehalfEnabled aktiviert ist.<\/p>\n\n\n\n<p>In betroffenen Umgebungen k\u00f6nnen Nachrichten, die als oder im Auftrag eines gemeinsam genutzten Postfachs gesendet werden, auch im Posteingang des gemeinsamen Postfachs erscheinen. Exchange stellt die urspr\u00fcngliche Nachricht als Anlage innerhalb einer separaten Wrapper-Nachricht zu.<\/p>\n\n\n\n<p>Microsoft plant, das Problem in einem k\u00fcnftigen Exchange Server-Release zu beheben.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-exchange-2016-and-2019-updates-have-limited-availability\">Updates f\u00fcr Exchange 2016 und 2019 sind nur eingeschr\u00e4nkt verf\u00fcgbar<\/h3>\n\n\n\n<p>Das Update f\u00fcr Exchange Server Subscription Edition steht allen Kunden zur Verf\u00fcgung.<\/p>\n\n\n\n<p>Die Sicherheitsupdates f\u00fcr Exchange Server 2019 und Exchange Server 2016 stellt Microsoft jedoch nur Kunden zur Verf\u00fcgung, die f\u00fcr Zeitraum 2 der Extended Security Updates registriert sind.<\/p>\n\n\n\n<p>Der ESU-Abdeckungszeitraum 2 bietet Sicherheitsupdates f\u00fcr Exchange Server 2016 und 2019 bis Oktober 2026.<\/p>\n\n\n\n<p>Die Exchange-Korrekturen erschienen zusammen mit dem umfassenderen Sicherheitsrollout von Microsoft im August. Die <a href=\"https:\/\/windowsreport.com\/de\/microsoft-behebt-rund-400-sicherheitslucken-im-august-2026-patch-tuesday\/\" target=\"_blank\" rel=\"noopener noreferrer\">August-2026-Patch-Tuesday-Updates haben rund 400 Sicherheitsl\u00fccken behoben<\/a>, darunter Dutzende, die als kritisch eingestuft wurden.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Microsoft hat die Sicherheitsupdates f\u00fcr Exchange Server vom August 2026 f\u00fcr Exchange Server Subscription Edition, Exchange Server 2019 und Exchange Server 2016 ver\u00f6ffentlicht. Die neuen Exchange Server-Sicherheitsupdates beheben mehrere Sicherheitsl\u00fccken, wobei die meisten Korrekturen auf Spoofing und Rechteausweitungen abzielen. OWA Light ist jetzt dauerhaft deaktiviert Die Sicherheitsupdates vom August deaktivieren Outlook Web App Light in [&hellip;]<\/p>\n","protected":false},"author":49,"featured_media":5215,"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-5214","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 v28.2 (Yoast SEO v28.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>OWA Light ist nach dem Exchange-Update von Microsoft im August endg\u00fcltig verschwunden<\/title>\n<meta name=\"description\" content=\"Microsoft ver\u00f6ffentlicht die August-2026-Sicherheitsupdates f\u00fcr Exchange Server, behebt mehrere Sicherheitsl\u00fccken und deaktiviert OWA Light 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