{"id":216652,"date":"2026-09-08T19:01:10","date_gmt":"2026-09-08T17:01:10","guid":{"rendered":"https:\/\/www.deskmodder.de\/blog\/?p=216652"},"modified":"2026-09-08T19:01:10","modified_gmt":"2026-09-08T17:01:10","slug":"kb5124008-windows-11-26h2-25h2-manueller-download-sicherheitsupdate-september-2026","status":"publish","type":"post","link":"https:\/\/www.deskmodder.de\/blog\/2026\/09\/08\/kb5124008-windows-11-26h2-25h2-manueller-download-sicherheitsupdate-september-2026\/","title":{"rendered":"KB5124008 Windows 11 26H2\/25H2 [Manueller Download] Sicherheitsupdate September 2026"},"content":{"rendered":"<p>Wir haben den zweiten Dienstag im Monat und damit den Patchday September 2026. Microsoft hat heute die KB 5124008 zum Download bereitgestellt. Damit \u00e4ndert sich auch die Versionsnummer auf die Windows 11 26H2 26300.9445, 25H2 26200.9445 bzw. 24H2 26100.9445. Also ein Update f\u00fcr drei Versionen.<\/p>\n<p><a href=\"https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2026\/09\/kb512400-windows-11-26h2-25h2-24h2.jpg\" rel=\"lightbox[216652]\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2026\/09\/kb512400-windows-11-26h2-25h2-24h2-500x358.jpg\" alt=\"\" width=\"500\" height=\"358\" class=\"aligncenter size-medium wp-image-216653\" srcset=\"https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2026\/09\/kb512400-windows-11-26h2-25h2-24h2-500x358.jpg 500w, https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2026\/09\/kb512400-windows-11-26h2-25h2-24h2-810x580.jpg 810w, https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2026\/09\/kb512400-windows-11-26h2-25h2-24h2-286x205.jpg 286w, https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2026\/09\/kb512400-windows-11-26h2-25h2-24h2.jpg 981w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<p>Drei deshalb, weil die 26H2 Ende August im <a href=\"https:\/\/www.deskmodder.de\/blog\/2026\/08\/27\/windows-11-26h2-26300-9278-im-release-preview-kanal\/\" target=\"_blank\">Release Preview<\/a> Kanal gelandet ist, und damit fertig ist, bevor sie dann im Oktober ganz offiziell freigegeben wird. Wer mit der 24H2 oder 25H2 unterwegs sein sollte, kann mit dem Funktionsupdate (<a href=\"https:\/\/www.deskmodder.de\/blog\/2026\/08\/27\/kb5121794-funktionsupdate-enablement-package-windows-11-26h2-als-download\/\" target=\"_blank\">KB5121794 als Enablement Package<\/a>) ganz einfach wechseln. Es kann aber sein, dass dieses Update f\u00fcr die 26H2 noch manuell installiert werden muss. (So war jedenfalls bisher immer).<\/p>\n<p>F\u00fcr die Consumer (Home\/Pro) der Windows 11 24H2 ist es das vorletzte Update. Dann ist der Support <a href=\"https:\/\/www.deskmodder.de\/wiki\/index.php?title=Windows_11_Welche_Version_ist_installiert#Windows_11_Updates_bis\" target=\"_blank\">nach zwei Jahren<\/a> vorbei. Aber ihr werdet sicherlich schon einen Wechsel in der Zwischenzeit vorgenommen haben, oder?<\/p>\n<p>Mit diesem Update werden auch die \u00c4nderungen aus dem optionalen Update (<a href=\"https:\/\/www.deskmodder.de\/blog\/2026\/08\/27\/kb5120998-windows-11-25h2-24h2-manueller-download-optionales-update-august-2026\/\" target=\"_blank\">KB5120998<\/a>) \u00fcbernommen. Es gab hier eine Reihe an Verbesserungen, so wie die Taskleiste, die man jetzt wieder <a href=\"https:\/\/www.deskmodder.de\/blog\/2026\/07\/28\/windows-11-taskleiste-jetzt-auf-allen-positionen-und-auch-kleine-taskleiste-wurde-integriert\/\" target=\"_blank\">verschieben kann<\/a>. Oder die Anpassung des Startmen\u00fcs. Die bekannten Problem wurden nat\u00fcrlich nicht mit \u00fcbernommen.<\/p>\n<h3>Bekannte Probleme durch die KB5124008<\/h3>\n<ul>\n<li><\/li>\n<\/ul>\n<h3>Korrekturen und Verbesserungen durch die KB5124008<\/h3>\n<ul>\n<li>Dieses Update behebt Sicherheitsprobleme im Windows-Betriebssystem.<\/li>\n<li>Die einzelnen Sicherheitsl\u00fccken, die geschlossen wurden, k\u00f6nnt ihr <a href=\"https:\/\/msrc.microsoft.com\/update-guide\/\" target=\"_blank\">hier nachlesen<\/a><\/li>\n<li>Rest folgt<\/li>\n<li><a href=\"https:\/\/support.microsoft.com\/help\/5124008\" target=\"_blank\">support.microsoft<\/a><\/li>\n<\/ul>\n<h3>Manueller Download der KB5124008<\/h3>\n<ul>\n<li><a href=\"https:\/\/catalog.sf.dl.delivery.mp.microsoft.com\/filestreamingservice\/files\/ed315343-4767-4a66-9be5-2a23bef1546e\/public\/windows11.0-kb5124008-x64_81e42f50fdb7af8d15eefc23aa51cf3e23215bdc.msu\" target=\"_blank\">Windows11.0-KB5124008-x64.msu<\/a><\/li>\n<li>ARM: <a href=\"https:\/\/catalog.sf.dl.delivery.mp.microsoft.com\/filestreamingservice\/files\/80a41ce9-2d13-4bb2-89ad-efcba8618cf9\/public\/windows11.0-kb5124008-arm64_fdafaffd9974ce7cb253ddc4222ab68dc34eec77.msu\" target=\"_blank\">Windows11.0-KB5124008-arm64.msu<\/a><\/li>\n<\/ul>\n<h3>Windows 11 Tutorials und Hilfe<\/h3>\n<ul>\n<li>In unserem <a href=\"https:\/\/www.deskmodder.de\/wiki\/index.php?title=Kategorie:Windows_11\" rel=\"noopener noreferrer\" target=\"_blank\">Windows 11 Wiki<\/a> findet ihr sehr viele hilfreiche Tipps und Tricks.<\/li>\n<li>Falls ihr Fragen habt, dann stellt diese ganz einfach bei uns im <a href=\"https:\/\/www.deskmodder.de\/phpBB3\/viewforum.php?f=353\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Forum<\/strong><\/a>.<\/li>\n<li><strong>Installationsmedien:<\/strong> Aktuelle Windows 11 ISOs findet ihr hier: <a href=\"https:\/\/www.deskmodder.de\/blog\/2026\/01\/28\/windows-11-26h2-26300-iso-esd-deutsch-english\/\" rel=\"noopener\" target=\"_blank\">26H2 26300<\/a> und hier <a href=\"https:\/\/www.deskmodder.de\/blog\/2025\/06\/28\/windows-11-25h2-26200-iso-esd-deutsch-english\/\" rel=\"noopener\" target=\"_blank\">25H2 26200<\/a>. Ansonsten <a href=\"https:\/\/www.deskmodder.de\/blog\/#:~:text=l%C3%A4dt%20die%2019045.3803-,Download%2DBereich,-Windows%2011%20ISO\" rel=\"noopener\" target=\"_blank\">immer in der rechten Sidebar<\/a>.<\/li>\n<li><a href=\"https:\/\/www.deskmodder.de\/wiki\/index.php?title=Windows_11_neu_clean_installieren_Tipps_und_Tricks\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Windows 11 neu clean installieren Tipps und Tricks<\/strong><\/a>.<\/li>\n<li><a href=\"https:\/\/www.deskmodder.de\/wiki\/index.php?title=Windows_11_auch_ohne_TPM_und_Secure_Boot_installieren\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Windows 11 auch ohne TPM und Secure Boot installieren<\/strong><\/a>.<\/li>\n<li><a href=\"https:\/\/www.deskmodder.de\/wiki\/index.php?title=Windows_11_mit_einem_lokalen_oder_Microsoft_Konto_installieren\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Windows 11 mit lokalem Konto auch Offline installieren<\/strong><\/a>.<\/li>\n<li><a href=\"https:\/\/www.deskmodder.de\/wiki\/index.php?title=Windows_11_Inplace_Upgrade_Reparatur_oder_Feature_Update\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Windows 11 Inplace Upgrade Reparatur oder Feature Update<\/strong><\/a>.<\/li>\n<li><a href=\"https:\/\/www.deskmodder.de\/wiki\/index.php?title=Automatisch_anmelden_Pin_entfernen_Windows_11\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>Automatisch anmelden Pin entfernen Windows 11<\/strong><\/a>.<\/li>\n<li>Alle Beitr\u00e4ge zu Windows 11 im Blog findet ihr <a href=\"https:\/\/www.deskmodder.de\/blog\/category\/windows-11\/\" rel=\"noopener\" target=\"_blank\">\u00fcber diese Seite<\/a>. Wobei auch <a href=\"https:\/\/www.deskmodder.de\/blog\/\" rel=\"noopener\" target=\"_blank\">alle anderen Artikel<\/a> interessant sein k\u00f6nnen.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Wir haben den zweiten Dienstag im Monat und damit den Patchday September 2026. Microsoft hat heute die KB 5124008 zum Download bereitgestellt. Damit \u00e4ndert sich auch die Versionsnummer auf die Windows 11 26H2 26300.9445, 25H2 26200.9445 bzw. 24H2 26100.9445. Also&hellip; <\/p>\n","protected":false},"author":134,"featured_media":153427,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[80310],"tags":[98173,98172,87516,89392,95414,98174,98175],"class_list":["post-216652","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows-11","tag-kb-5124008","tag-kb5124008","tag-windows-11-24h2","tag-windows-11-25h2","tag-windows-11-26h2","tag-windows-11-26h2-patchday","tag-windows-11-26h2-update-installieren"],"wp_featured_image":{"id":153427,"alt_text":"","description":"","media_type":"image","media_details":{"width":978,"height":584,"file":"2021\/05\/windows-10-update-logo.jpg","sizes":{"medium":{"file":"windows-10-update-logo-500x299.jpg","width":500,"height":299,"mime-type":"image\/jpeg","source_url":"https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2021\/05\/windows-10-update-logo-500x299.jpg"},"large":{"file":"windows-10-update-logo-810x484.jpg","width":810,"height":484,"mime-type":"image\/jpeg","source_url":"https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2021\/05\/windows-10-update-logo-810x484.jpg"},"thumbnail":{"file":"windows-10-update-logo-306x183.jpg","width":306,"height":183,"mime-type":"image\/jpeg","source_url":"https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2021\/05\/windows-10-update-logo-306x183.jpg"},"blog-large":{"file":"windows-10-update-logo-642x300.jpg","width":642,"height":300,"mime-type":"image\/jpeg","source_url":"https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2021\/05\/windows-10-update-logo-642x300.jpg"},"blog-medium":{"file":"windows-10-update-logo-306x205.jpg","width":306,"height":205,"mime-type":"image\/jpeg","source_url":"https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2021\/05\/windows-10-update-logo-306x205.jpg"},"recent-thumb":{"file":"windows-10-update-logo-350x316.jpg","width":350,"height":316,"mime-type":"image\/jpeg","source_url":"https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2021\/05\/windows-10-update-logo-350x316.jpg"},"service-featured":{"file":"windows-10-update-logo-600x330.jpg","width":600,"height":330,"mime-type":"image\/jpeg","source_url":"https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2021\/05\/windows-10-update-logo-600x330.jpg"},"wp_rp_thumbnail":{"file":"windows-10-update-logo-50x50.jpg","width":50,"height":50,"mime-type":"image\/jpeg","source_url":"https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2021\/05\/windows-10-update-logo-50x50.jpg"}},"image_meta":{"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0","keywords":[]}},"post":155113,"source_url":"https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2021\/05\/windows-10-update-logo.jpg"},"commentcount":3,"wp_comments":[{"id":344969,"parent":0,"author":0,"author_name":"helmar","author_email":"helmut.schuett@web.de","author_url":"","author_avatar_urls":{"24":"https:\/\/secure.gravatar.com\/avatar\/e085fc36f3963437633caac3e069fcb97e897c1805cf905ed729549584a58de7?s=24&d=mm&r=g","48":"https:\/\/secure.gravatar.com\/avatar\/e085fc36f3963437633caac3e069fcb97e897c1805cf905ed729549584a58de7?s=48&d=mm&r=g","96":"https:\/\/secure.gravatar.com\/avatar\/e085fc36f3963437633caac3e069fcb97e897c1805cf905ed729549584a58de7?s=96&d=mm&r=g"},"date":"2026-09-08T19:09:21","cld_nonce":"95f417540e","content":{"rendered":"<p>Nur zur Info.<br \/>\nIch habe vor 2 Wochen einen Windows 11 25H2 PC mit dem Enablement Package auf 26H2 upgedated.<br \/>\nAuf diesem Rechner bekomme ich, obwohl keine Insider genutzt, nun 26300.9445 zur Installation angeboten.<br \/>\nEvtl hat Microsoft die nun auch in den Retail Kanal genommen?<\/p>\n"},"status":"1"},{"id":344970,"parent":0,"author":0,"author_name":"Andi","author_email":"andi-lau@gmx.net","author_url":"","author_avatar_urls":{"24":"https:\/\/secure.gravatar.com\/avatar\/34bb8232f4348a8d38ff737adfe7e3c84f628ed0e0884f073e4a67529af1e992?s=24&d=mm&r=g","48":"https:\/\/secure.gravatar.com\/avatar\/34bb8232f4348a8d38ff737adfe7e3c84f628ed0e0884f073e4a67529af1e992?s=48&d=mm&r=g","96":"https:\/\/secure.gravatar.com\/avatar\/34bb8232f4348a8d38ff737adfe7e3c84f628ed0e0884f073e4a67529af1e992?s=96&d=mm&r=g"},"date":"2026-09-08T19:12:15","cld_nonce":"95f417540e","content":{"rendered":"<p>Wurde der Fehler mit dem Mauszeiger und Desktophintergrund behoben?<\/p>\n"},"status":"1"},{"id":344971,"parent":344969,"author":4440,"author_name":"DK2000","author_email":"kleiner.dicker.tiger@gmail.com","author_url":"","author_avatar_urls":{"24":"https:\/\/secure.gravatar.com\/avatar\/f47c5818487788ab85c373f448667f574e8c0e789a076cd59313e685780305a2?s=24&d=mm&r=g","48":"https:\/\/secure.gravatar.com\/avatar\/f47c5818487788ab85c373f448667f574e8c0e789a076cd59313e685780305a2?s=48&d=mm&r=g","96":"https:\/\/secure.gravatar.com\/avatar\/f47c5818487788ab85c373f448667f574e8c0e789a076cd59313e685780305a2?s=96&d=mm&r=g"},"date":"2026-09-08T19:14:05","cld_nonce":"95f417540e","content":{"rendered":"<p>W\u00e4re ja nicht schlecht. Aber ist ja so oder so egal. 24H2, 25H2 und 26H2 bekommen ja alle das selbe Update.<\/p>\n"},"status":"1"}],"wp_author":{"id":134,"name":"moinmoin","description":"Ich bin nicht allwissend, was <a href=\"https:\/\/www.deskmodder.de\/wiki\/index.php?title=Kategorie:Windows_11\">Windows<\/a> angeht. Aber genau deshalb nehme ich Windows gerne auseinander und unter die Lupe, um all mein Wissen zu erweitern. <i>J\u00fcrgen<\/i>","author_avatar_urls":{"24":"https:\/\/secure.gravatar.com\/avatar\/fab96769102f8886245ab411df9a42a235be79261e4b44aa7ab2a555da8b86b4?s=24&d=mm&r=g","48":"https:\/\/secure.gravatar.com\/avatar\/fab96769102f8886245ab411df9a42a235be79261e4b44aa7ab2a555da8b86b4?s=48&d=mm&r=g","96":"https:\/\/secure.gravatar.com\/avatar\/fab96769102f8886245ab411df9a42a235be79261e4b44aa7ab2a555da8b86b4?s=96&d=mm&r=g"}},"cld_nonce":"95f417540e","yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.4 (Yoast SEO v28.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>KB5124008 Windows 11 26H2\/25H2 [Manueller Download] Sicherheitsupdate September 2026 - Deskmodder.de<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.deskmodder.de\/blog\/2026\/09\/08\/kb5124008-windows-11-26h2-25h2-manueller-download-sicherheitsupdate-september-2026\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"KB5124008 Windows 11 26H2\/25H2 [Manueller Download] Sicherheitsupdate September 2026\" \/>\n<meta property=\"og:description\" content=\"Wir haben den zweiten Dienstag im Monat und damit den Patchday September 2026. Microsoft hat heute die KB 5124008 zum Download bereitgestellt. Damit \u00e4ndert sich auch die Versionsnummer auf die Windows 11 26H2 26300.9445, 25H2 26200.9445 bzw. 24H2 26100.9445. Also&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.deskmodder.de\/blog\/2026\/09\/08\/kb5124008-windows-11-26h2-25h2-manueller-download-sicherheitsupdate-september-2026\/\" \/>\n<meta property=\"og:site_name\" content=\"Deskmodder.de\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Deskmodder\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-08T17:01:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.deskmodder.de\/blog\/wp-content\/uploads\/2021\/05\/windows-10-update-logo.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"978\" \/>\n\t<meta property=\"og:image:height\" content=\"584\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"moinmoin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@Deskmodder\" \/>\n<meta name=\"twitter:site\" content=\"@Deskmodder\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.deskmodder.de\\\/blog\\\/2026\\\/09\\\/08\\\/kb5124008-windows-11-26h2-25h2-manueller-download-sicherheitsupdate-september-2026\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.deskmodder.de\\\/blog\\\/2026\\\/09\\\/08\\\/kb5124008-windows-11-26h2-25h2-manueller-download-sicherheitsupdate-september-2026\\\/\"},\"author\":{\"name\":\"moinmoin\",\"@id\":\"https:\\\/\\\/www.deskmodder.de\\\/blog\\\/#\\\/schema\\\/person\\\/a40b17a9503c4a1568ac4073bb54182a\"},\"headline\":\"KB5124008 Windows 11 26H2\\\/25H2 [Manueller Download] Sicherheitsupdate September 2026\",\"datePublished\":\"2026-09-08T17:01:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.deskmodder.de\\\/blog\\\/2026\\\/09\\\/08\\\/kb5124008-windows-11-26h2-25h2-manueller-download-sicherheitsupdate-september-2026\\\/\"},\"wordCount\":342,\"commentCount\":3,\"publisher\":{\"@id\":\"https:\\\/\\\/www.deskmodder.de\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.deskmodder.de\\\/blog\\\/2026\\\/09\\\/08\\\/kb5124008-windows-11-26h2-25h2-manueller-download-sicherheitsupdate-september-2026\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.deskmodder.de\\\/blog\\\/wp-content\\\/uploads\\\/2021\\\/05\\\/windows-10-update-logo.jpg\",\"keywords\":[\"KB 5124008\",\"KB5124008\",\"Windows 11 24H2\",\"Windows 11 25H2\",\"Windows 11 26H2\",\"Windows 11 26H2 Patchday\",\"Windows 11 26H2 Update installieren\"],\"articleSection\":[\"Windows 11\"],\"inLanguage\":\"de\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.deskmodder.de\\\/blog\\\/2026\\\/09\\\/08\\\/kb5124008-windows-11-26h2-25h2-manueller-download-sicherheitsupdate-september-2026\\\/#respond\"]}],\"copyrightYear\":\"2026\",\"copyrightHolder\":{\"@id\":\"https:\\\/\\\/www.deskmodder.de\\\/blog\\\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.deskmodder.de\\\/blog\\\/2026\\\/09\\\/08\\\/kb5124008-windows-11-26h2-25h2-manueller-download-sicherheitsupdate-september-2026\\\/\",\"url\":\"https:\\\/\\\/www.deskmodder.de\\\/blog\\\/2026\\\/09\\\/08\\\/kb5124008-windows-11-26h2-25h2-manueller-download-sicherheitsupdate-september-2026\\\/\",\"name\":\"KB5124008 Windows 11 26H2\\\/25H2 [Manueller Download] Sicherheitsupdate September 2026 - 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