{"id":136617,"date":"2026-11-13T11:39:25","date_gmt":"2026-11-13T02:39:25","guid":{"rendered":"https:\/\/softantenna.com\/blog\/?p=136617"},"modified":"2026-11-13T11:39:25","modified_gmt":"2026-11-13T02:39:25","slug":"kb5132061-powershell-script-signature","status":"publish","type":"post","link":"https:\/\/softantenna.com\/blog\/kb5132061-powershell-script-signature\/","title":{"rendered":"KB5132061\u9069\u7528\u5f8c\u306b\u7f72\u540d\u6e08\u307fPowerShell\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u300cNotSigned\u300d\u306b\u306a\u308b\u539f\u56e0\u3068\u5bfe\u51e6\u6cd5"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/softantenna.com\/blog\/wp-content\/uploads\/2026\/11\/s_20261111-_100230.webp\" alt=\"\" width=\"1200\" height=\"750\" class=\"aligncenter size-full wp-image-136581\" \/><\/p>\n<p>Microsoft\u306f\u5148\u65e5\u30012026\u5e7411\u6708\u306e\u6708\u4f8b\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u3057\u3066\u3001Windows 11\u7528\u306e\u7d2f\u7a4d\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u300c<a href=\"https:\/\/softantenna.com\/blog\/windows-11-kb5132061\/\">KB5132061<\/a>\u300d\u3092\u914d\u4fe1\u3057\u307e\u3057\u305f\u3002<\/p>\n<p>\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4fee\u6b63\u3084\u305d\u306e\u4ed6\u6539\u5584\u591a\u6570\u542b\u3093\u3067\u3044\u307e\u3059\u304c\u3001\u305d\u306e\u306a\u304b\u3067\u3001\u3042\u307e\u308a\u8a71\u984c\u306b\u306a\u3063\u3066\u3044\u306a\u3044\u3082\u306e\u306e\u3001PowerShell\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u65e5\u5e38\u7684\u306b\u4f7f\u3063\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u3084\u7ba1\u7406\u8005\u304c\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u5909\u66f4\u304c1\u3064\u542b\u307e\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u4f55\u304c\u5909\u308f\u3063\u305f\u306e\u304b<\/h2>\n<p>KB5132061\u306e\u30ea\u30ea\u30fc\u30b9\u30ce\u30fc\u30c8\u306b\u3088\u308b\u3068\u3001PowerShell\u30b9\u30af\u30ea\u30d7\u30c8\u306b\u7f72\u540d\u3059\u308b\u3068\u304d\u3068\u7f72\u540d\u3092\u691c\u8a3c\u3059\u308b\u3068\u304d\u306e\u3001\u30c6\u30ad\u30b9\u30c8\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u30c1\u30a7\u30c3\u30af\u304c\u53b3\u3057\u304f\u306a\u308a\u307e\u3057\u305f\u3002\u5909\u66f4\u306e\u76ee\u7684\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5f37\u5316\u3067\u3059\u304c\u3001\u74b0\u5883\u306b\u3088\u3063\u3066\u306f\u5bfe\u5fdc\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059(\u5148\u65e5\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u305fPowerShell 7.7\u3068\u306f\u95a2\u4fc2\u3042\u308a\u307e\u305b\u3093)\u3002<\/p>\n<blockquote><p>\n[Windows PowerShell] This update strengthens security for PowerShell script signing and signature verification by introducing stricter encoding validation. As a result, scripts containing invalid UTF-8 encoding might fail signature validation, even if they were previously accepted. To resolve this issue, review the affected scripts, save them using valid UTF-8 encoding with a byte order mark (BOM), and sign them again. For further guidance, see Encoding Guidance for Signed PowerShell Scripts.<\/p>\n<p>[Windows PowerShell] \u3053\u306e\u66f4\u65b0\u3067\u306f\u3001\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u691c\u8a3c\u3092\u53b3\u3057\u304f\u3057\u3066\u3001PowerShell\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u7f72\u540d\u3068\u7f72\u540d\u691c\u8a3c\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5f37\u5316\u3057\u307e\u3057\u305f\u3002\u305d\u306e\u305f\u3081\u3001\u7121\u52b9\u306aUTF-8\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u542b\u3080\u30b9\u30af\u30ea\u30d7\u30c8\u306f\u3001\u4ee5\u524d\u306f\u53d7\u3051\u4ed8\u3051\u3089\u308c\u3066\u3044\u305f\u5834\u5408\u3067\u3082\u3001\u7f72\u540d\u306e\u691c\u8a3c\u306b\u5931\u6557\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u554f\u984c\u3092\u89e3\u6c7a\u3059\u308b\u306b\u306f\u3001\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u78ba\u8a8d\u3057\u3001\u6b63\u3057\u3044UTF-8\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\uff08\u30d0\u30a4\u30c8\u9806\u30de\u30fc\u30af\uff08BOM\uff09\u4ed8\u304d\uff09\u3067\u4fdd\u5b58\u3057\u76f4\u3057\u3066\u304b\u3089\u3001\u3082\u3046\u4e00\u5ea6\u7f72\u540d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u8a73\u3057\u304f\u306f\u300cEncoding Guidance for Signed PowerShell Scripts\u300d\uff08\u7f72\u540d\u4ed8\u304dPowerShell\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306b\u95a2\u3059\u308b\u30ac\u30a4\u30c0\u30f3\u30b9\uff09\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002\n<\/p><\/blockquote>\n<p>\u3053\u308c\u307e\u3067\u554f\u984c\u306a\u304f\u691c\u8a3c\u3092\u901a\u3063\u3066\u3044\u305f\u53e4\u3044\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u3082\u3001\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306b\u4e0d\u6b63\u306a\u90e8\u5206\u304c\u3042\u308c\u3070\u7f72\u540d\u304c\u62d2\u5426\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u7279\u306b\u5f71\u97ff\u304c\u5927\u304d\u3044\u306e\u306f\u3001\u58ca\u308c\u305fUTF-8\u3092\u542b\u3080\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u3059\u3002\u3053\u308c\u307e\u3067\u306eWindows\u306f\u3001\u30c7\u30b3\u30fc\u30c9\u6642\u306b\u4e0d\u6b63\u306a\u6587\u5b57\u3092\u5225\u306e\u6587\u5b57\u306b\u7f6e\u304d\u63db\u3048\u3066\u51e6\u7406\u3092\u7d9a\u3051\u3066\u3044\u307e\u3057\u305f\u3002\u4eca\u56de\u306e\u66f4\u65b0\u304b\u3089\u306f\u4e0d\u6b63\u306aUTF-8\u3092\u306f\u3063\u304d\u308a\u62d2\u5426\u3059\u308b\u306e\u3067\u3001\u540c\u3058\u30b9\u30af\u30ea\u30d7\u30c8\u3067\u3082\u7f72\u540d\u306e\u691c\u8a3c\u306b\u5931\u6557\u3057\u307e\u3059\u3002<\/p>\n<p>\u5f37\u5316\u3055\u308c\u305f\u30c1\u30a7\u30c3\u30af\u306b\u3088\u308a\u3001\u7f72\u540d\u6e08\u307f\u306e\u306f\u305a\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u306bGet-AuthenticodeSignature\u3092\u5b9f\u884c\u3059\u308b\u3068\u3001\u300cNotSigned\u300d\u3068\u8fd4\u3063\u3066\u308b\u30b1\u30fc\u30b9\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u307e\u305f\u3001\u554f\u984c\u306e\u3042\u308b\u30d5\u30a1\u30a4\u30eb\u306bSet-AuthenticodeSignature\u3067\u7f72\u540d\u3057\u76f4\u305d\u3046\u3068\u3057\u3066\u3082\u30a8\u30e9\u30fc\u306b\u306a\u308b\u5834\u5408\u304c\u3067\u3066\u304d\u307e\u3059\u3002\u3053\u3053\u6570\u65e5\u3067\u53e4\u3044\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u6025\u306b\u5b9f\u884c\u3067\u304d\u306a\u304f\u306a\u3063\u305f\u306a\u3089\u3001\u3053\u306e\u5909\u66f4\u304c\u539f\u56e0\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<h2>Microsoft\u304c\u793a\u3059\u5bfe\u51e6\u6cd5<\/h2>\n<p>Microsoft\u306f\u3059\u3067\u306b\u5bfe\u51e6\u6cd5\u3092\u307e\u3068\u3081\u305f<a href=\"https:\/\/support.microsoft.com\/en-us\/servicing\/os\/windows\/docs\/2026\/11\/powershell-sip-canonical-repair\">\u30b5\u30dd\u30fc\u30c8\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/a>\u3092\u516c\u958b\u3057\u3066\u3044\u307e\u3059\u3002\u5bfe\u51e6\u6cd5\u306e\u57fa\u672c\u7684\u306a\u624b\u9806\u306f\u3001\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u6b63\u3057\u3044UTF-8(BOM\u4ed8\u304d)\u3067\u4fdd\u5b58\u3057\u76f4\u3057\u3001\u4e2d\u8eab\u3092\u78ba\u8a8d\u3057\u305f\u3046\u3048\u3067\u3001\u3082\u3046\u4e00\u5ea6\u7f72\u540d\u3059\u308b\u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002<\/p>\n<p>\u5bfe\u8c61\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u591a\u3044\u5834\u5408\u306b\u5411\u3051\u3066\u3001\u4e00\u62ec\u3067\u51e6\u7406\u3067\u304d\u308bPowerShell\u88fd\u306e\u4fee\u5fa9\u30c4\u30fc\u30eb\u3082\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30c4\u30fc\u30eb\u306f\u30d5\u30a1\u30a4\u30eb\u3092\u30b9\u30ad\u30e3\u30f3\u3057\u3066\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u554f\u984c\u3092\u63a2\u3057\u3001\u65e2\u5b58\u306e\u7f72\u540d\u3092\u4fdd\u3063\u305f\u307e\u307e\u4fee\u5fa9\u3092\u8a66\u307f\u307e\u3059\u3002\u5143\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u4e0a\u66f8\u304d\u3057\u306a\u3044\u306e\u3067\u5b89\u5fc3\u3057\u3066\u8a66\u305b\u307e\u3059\u304c\u3001Microsoft\u306f\u3059\u3079\u3066\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u81ea\u52d5\u3067\u76f4\u305b\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u3068\u3082\u6ce8\u610f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u306a\u304a\u3001\u3053\u306e\u5909\u66f4\u306fWindows 11\u306b\u9650\u308a\u307e\u305b\u3093\u3002Windows 10 Enterprise LTSC 2021\u3084\u3001Windows Server 2025\u3092\u542b\u3080\u4e00\u90e8\u306eWindows Server\u3082\u5bfe\u8c61\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u30b5\u30fc\u30d0\u30fc\u3067\u7f72\u540d\u4ed8\u304d\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u904b\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3082\u3001\u78ba\u8a8d\u3057\u3066\u304a\u304f\u3068\u5b89\u5fc3\u3067\u3059\u3002<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u4eca\u56de\u306e\u5909\u66f4\u306f\u3001\u4e0d\u6b63\u306a\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u898b\u9003\u3055\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5f37\u5316\u3067\u3001\u9577\u3044\u76ee\u3067\u898b\u308c\u3070\u826f\u3044\u65b9\u5411\u306e\u5909\u66f4\u3067\u3059\u3002\u305f\u3060\u3001\u6614\u304b\u3089\u4f7f\u3063\u3066\u3044\u308b\u7f72\u540d\u6e08\u307f\u30b9\u30af\u30ea\u30d7\u30c8\u304c\u7a81\u7136\u52d5\u304b\u306a\u304f\u306a\u308b\u53ef\u80fd\u6027\u306f\u3042\u308a\u307e\u3059\u3002\u66f4\u65b0\u5f8c\u306b\u52d5\u4f5c\u304c\u304a\u304b\u3057\u304f\u306a\u3063\u305f\u3089\u3001\u307e\u305a\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002<\/p>\n<p>[via <a href=\"https:\/\/www.neowin.net\/news\/latest-windows-11-update-kb5132061-could-break-your-powershell-scripts\/\/\">Neowin<\/a>]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Microsoft\u306f\u5148\u65e5\u30012026\u5e7411\u6708\u306e\u6708\u4f8b\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u3057\u3066\u3001Windows 11\u7528\u306e\u7d2f\u7a4d\u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u300cKB5132061\u300d\u3092\u914d\u4fe1\u3057\u307e\u3057\u305f\u3002 \u66f4\u65b0\u30d7\u30ed\u30b0\u30e9\u30e0\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4fee\u6b63\u3084\u305d\u306e\u4ed6\u6539\u5584\u591a\u6570\u542b\u3093\u3067\u3044 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":136581,"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-136617","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\/136617","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=136617"}],"version-history":[{"count":0,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/posts\/136617\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media\/136581"}],"wp:attachment":[{"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/media?parent=136617"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/categories?post=136617"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/softantenna.com\/blog\/wp-json\/wp\/v2\/tags?post=136617"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}