{"id":11725,"date":"2026-03-25T22:55:35","date_gmt":"2026-03-25T13:55:35","guid":{"rendered":"https:\/\/www.xenos.jp\/~zen\/blog2\/?p=11725"},"modified":"2026-03-24T22:57:47","modified_gmt":"2026-03-24T13:57:47","slug":"%e3%80%8casp-net-core-does-not-support-multiple-apps-in-the-same-app-pool-%e3%80%8d%e3%81%ae%e3%82%a8%e3%83%a9%e3%83%bc","status":"publish","type":"post","link":"https:\/\/www.xenos.jp\/~zen\/blog2\/index.php\/2026\/03\/25\/post-11725\/","title":{"rendered":"\u300cASP.NET Core does not support multiple apps in the same app pool \u300d\u306e\u30a8\u30e9\u30fc"},"content":{"rendered":"\n<p>\uff29\uff29\uff33\u306b\u30c6\u30b9\u30c8\u3059\u308b\u30a2\u30d7\u30ea\u3092\u30c7\u30d7\u30ed\u30a4\u3057\u3066\u3001\u30a2\u30af\u30bb\u30b9\u3057\u305f\u3089\u300cASP.NET Core does not support multiple apps in the same app pool \u300d\u304c\u3067\u305f\u3002\u3053\u306e\u30a8\u30e9\u30fc\u306f\u3001\uff11\u3064\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30fc\u30eb\u306b\u5bfe\u3057\u3066\u3001\uff11\u3064\u306e\u30a2\u30d7\u30ea\u3092\u5272\u308a\u5f53\u3066\u308b\u5fc5\u8981\u304c\u3042\u308b\u306e\u3067\u3001\u540c\u3058\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30fc\u30eb\u306b\u8907\u6570\u306e\u30a2\u30d7\u30ea\u304c\u5272\u5f53\u305f\u3063\u3066\u3044\u305f\u5834\u5408\u3001\uff12\u3064\u76ee\u306e\u30a2\u30d7\u30ea\u3067\u8868\u793a\u3055\u308c\u308b\u3082\u306e\u3060\u3002\u3053\u306e\u30a8\u30e9\u30fc\u304c\u3067\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30fc\u30eb\u3092\u65b0\u3057\u304f\u4f5c\u3063\u3066\u3001\u5272\u308a\u5f53\u3066\u306a\u304a\u305b\u3070\u3088\u3044\u3002<\/p>\n\n\n\n<p>\u306a\u304a\u3001\u6614\u306f\uff11\u3064\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30d7\u30fc\u30eb\u306b\u8907\u6570\u30a2\u30d7\u30ea\u3060\u3063\u305f\u3002.NET Framework 4.8\u7cfb\u3060\u3068\u3001\u3053\u306e\u30a8\u30e9\u30fc\u304c\u51fa\u306a\u304b\u3063\u305f\u308a\u3059\u308b\u306e\u3067\u3001\u53e4\u3044\u30bf\u30a4\u30d7\u306e\u30a2\u30d7\u30ea\u7ba1\u7406\u3092\u3057\u3066\u3044\u308b\u3068\u3001\u3084\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u304c\u3042\u308b\u3002<\/p>\n\n\n\n<p>II\uff33\u306e\u30a2\u30d7\u30ea\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u3068\u304d\u306b\u8868\u793a\u3055\u308c\u305f\u30a8\u30e9\u30fc<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>HTTP Error 500.35 - ASP.NET Core does not support multiple apps in the same app pool \n\nCommon solutions to this issue: \nSelect a different app pool to host this app. \nTroubleshooting steps: \n\u2022 Check the system event log for error messages \n\u2022 Enable logging the application process' stdout messages \n\u2022 Attach a debugger to the application process and inspect \n\nFor more guidance on diagnosing and handling these errors, visit Troubleshoot ASP.NET Core on Azure App Service and IIS.<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\uff29\uff29\uff33\u306b\u30c6\u30b9\u30c8\u3059\u308b\u30a2\u30d7\u30ea\u3092\u30c7\u30d7\u30ed\u30a4\u3057\u3066\u3001\u30a2\u30af\u30bb\u30b9\u3057\u305f\u3089\u300cASP.NET Core does not support multiple apps in the same app pool \u300d\u304c\u3067\u305f\u3002\u3053\u306e\u30a8\u30e9\u30fc\u306f\u3001\uff11\u3064\u306e\u30a2\u30d7 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[306,243,174],"class_list":["post-11725","post","type-post","status-publish","format-standard","hentry","category-windows","tag-net10","tag-iis","tag-windowsserver2019"],"_links":{"self":[{"href":"https:\/\/www.xenos.jp\/~zen\/blog2\/index.php\/wp-json\/wp\/v2\/posts\/11725","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xenos.jp\/~zen\/blog2\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xenos.jp\/~zen\/blog2\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xenos.jp\/~zen\/blog2\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xenos.jp\/~zen\/blog2\/index.php\/wp-json\/wp\/v2\/comments?post=11725"}],"version-history":[{"count":1,"href":"https:\/\/www.xenos.jp\/~zen\/blog2\/index.php\/wp-json\/wp\/v2\/posts\/11725\/revisions"}],"predecessor-version":[{"id":11726,"href":"https:\/\/www.xenos.jp\/~zen\/blog2\/index.php\/wp-json\/wp\/v2\/posts\/11725\/revisions\/11726"}],"wp:attachment":[{"href":"https:\/\/www.xenos.jp\/~zen\/blog2\/index.php\/wp-json\/wp\/v2\/media?parent=11725"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xenos.jp\/~zen\/blog2\/index.php\/wp-json\/wp\/v2\/categories?post=11725"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xenos.jp\/~zen\/blog2\/index.php\/wp-json\/wp\/v2\/tags?post=11725"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}