\nMicrosoft has received a limited number of reports of an issue in which devices are failing to boot with stop\u202fcode \u201cUNMOUNTABLE_BOOT_VOLUME\u201d, after installing the January 2026 Windows security update (the Originating KBs listed above), released January 13, 2026, and later updates. Affected devices show a black screen with the message \u201cYour device ran into a problem and needs a restart. You can restart.\u201d At this stage, the device cannot complete startup and requires manual recovery steps.<\/p>\n
Microsoft\u306f\u30012026\u5e741\u6708\u306eWindows\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0(\u4e0a\u8a18\u306eKB\u3092\u542b\u3080\u30011\u670813\u65e5\u516c\u958b\u306e\u66f4\u65b0\u304a\u3088\u3073\u305d\u308c\u4ee5\u964d\u306e\u66f4\u65b0)\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u305f\u5f8c\u3001\u30c7\u30d0\u30a4\u30b9\u304cSTOP\u30b3\u30fc\u30c9\u300cUNMOUNTABLE_BOOT_VOLUME\u300d\u3067\u8d77\u52d5\u306b\u5931\u6557\u3059\u308b\u554f\u984c\u306b\u3064\u3044\u3066\u3001\u9650\u5b9a\u7684\u306a\u304c\u3089\u5831\u544a\u3092\u53d7\u3051\u3066\u3044\u307e\u3059\u3002\u5f71\u97ff\u3092\u53d7\u3051\u305f\u30c7\u30d0\u30a4\u30b9\u3067\u306f\u3001\u9ed2\u3044\u753b\u9762\u306b\u300cYour device ran into a problem and needs a restart.You can restart.\u300d\u3068\u3044\u3046\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u6bb5\u968e\u3067\u306f\u3001\u30c7\u30d0\u30a4\u30b9\u306f\u8d77\u52d5\u3092\u5b8c\u4e86\u3067\u304d\u305a\u3001\u624b\u52d5\u3067\u306e\u5fa9\u65e7\u4f5c\u696d\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002\n<\/p><\/blockquote>\n
Microsoft\u306f\u300c\u9650\u5b9a\u7684\u306a\u6570\u306e\u5831\u544a\u3092\u53d7\u3051\u3066\u3044\u308b\u300d\u3068\u3057\u3001\u539f\u56e0\u3092\u8abf\u67fb\u4e2d\u3060\u3068\u3057\u3066\u3044\u307e\u3059\u3002\u73fe\u6642\u70b9\u3067\u306f\u624b\u52d5\u5fa9\u65e7\u304c\u5fc5\u8981\u3060\u3068\u3044\u3046\u3053\u3068\u3060\u3051\u304c\u308f\u304b\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u5177\u4f53\u7684\u306a\u624b\u9806\u306f\u63d0\u793a\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u8ffd\u52a0\u60c5\u5831\u306f\u5f8c\u65e5\u63d0\u4f9b\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n
2024\u5e74\u306b\u5c0e\u5165\u3055\u308c\u305fQuick Machine Recovery(WinRE\u3067\u306e\u81ea\u52d5\u5fa9\u65e7\u6a5f\u80fd)\u3082\u3001\u4eca\u56de\u306e\u30b1\u30fc\u30b9\u3067\u306f\u307e\u3060\u6709\u52b9\u306b\u50cd\u3044\u3066\u3044\u306a\u3044\u3088\u3046\u3067\u3059\u3002<\/p>\n
\u307e\u3068\u3081<\/h2>\n
Microsoft\u304c\u539f\u56e0\u3092\u7279\u5b9a\u3057\u3001\u4fee\u6b63\u30d1\u30c3\u30c1\u3092\u63d0\u4f9b\u3059\u308b\u307e\u3067\u3001\u4f01\u696d\u30e6\u30fc\u30b6\u30fc\u3084\u7ba1\u7406\u8005\u306f\u614e\u91cd\u306a\u5bfe\u5fdc\u304c\u6c42\u3081\u3089\u308c\u307e\u3059\u3002\u307e\u3060\u66f4\u65b0\u3092\u9069\u7528\u3057\u3066\u3044\u306a\u3044\u74b0\u5883\u306f\u9069\u7528\u306e\u4e00\u6642\u505c\u6b62\u3092\u691c\u8a0e\u3057\u3001\u3059\u3067\u306b\u5f71\u97ff\u3092\u53d7\u3051\u305fPC\u306f\u3001Microsoft \u306e\u7d9a\u5831\u3092\u5f85\u3061\u3064\u3064\u3001WinRE\u3067\u306e\u5fa9\u65e7\u3092\u691c\u8a0e\u3059\u308b\u5fc5\u8981\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n
2026\u5e741\u6708\u306e\u6708\u4f8b\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u4e0d\u5177\u5408\u304c\u591a\u304f\u3001\u4eca\u5f8c\u3082\u6ce8\u610f\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u305d\u3046\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
2026\u5e741\u6708\u306e\u6708\u4f8b\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u9069\u7528\u3057\u305f\u4e00\u90e8\u306eWindows 11PC\u3067 \u300cUNMOUNTABLE_BOOT_VOLUME\u300d\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3001\u8d77\u52d5\u4e0d\u80fd\u306b\u306a\u308b\u3068\u3044\u3046\u6df1\u523b\u306a\u4e0d\u5177\u5408\u304c\u5831\u544a\u3055\u308c\u3066\u3044\u307e\u3059\u3002Microsoft\u3082\u554f\u984c […]<\/p>\n","protected":false},"author":2,"featured_media":132629,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[3],"tags":[3298,4387],"class_list":["post-132628","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-windows","tag-windows","tag-windows11"],"_links":{"self":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/132628","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/comments?post=132628"}],"version-history":[{"count":0,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/132628\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media\/132629"}],"wp:attachment":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media?parent=132628"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/categories?post=132628"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/tags?post=132628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"](\"https:\/\/softantenna.com\/blog\/wp-content\/uploads\/2026\/01\/windows11notboot.jpg\")
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