--- title: Warning AD0001: Analyzer... description: An upgrade to .NET 8 may cause a warning AD0001 related to the Microsoft.AspNetCore.Analyzers.RouteHandlers.RouteHandlerAnalyzer. This post discusses the issue... canonical: https://daily.dev/posts/warning-ad0001-analyzer-microsoft-aspnetcore-analyzers-routehandlers-routehandleranalyzer-threw-a-jodk8aqcd twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Warning AD0001: Analyzer 'Microsoft.AspNetCore.Analyzers.RouteHandlers.RouteHandlerAnalyzer' threw an exception of type 'System.InvalidOperationException' | daily.dev og:description: An upgrade to .NET 8 may cause a warning AD0001 related to the Microsoft.AspNetCore.Analyzers.RouteHandlers.RouteHandlerAnalyzer. This post discusses the issue... og:url: https://daily.dev/posts/warning-ad0001-analyzer-microsoft-aspnetcore-analyzers-routehandlers-routehandleranalyzer-threw-a-jodk8aqcd og:image: https://api.daily.dev/og/posts/jOdK8aqCD.png og:image:alt: Warning AD0001: Analyzer 'Microsoft.AspNetCore.Analyzers.RouteHandlers.RouteHandlerAnalyzer' threw an exception of type 'System.InvalidOperationException' og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Warning AD0001: Analyzer 'Microsoft.AspNetCore.Analyzers.RouteHandlers.RouteHandlerAnalyzer' threw an exception of type 'System.InvalidOperationException' **[The Art of Simplicity](https://daily.dev/sources/bartwullems)** · 1 min read · 2 upvotes · 0 comments ## Summary An upgrade to .NET 8 may cause a warning AD0001 related to the Microsoft.AspNetCore.Analyzers.RouteHandlers.RouteHandlerAnalyzer. This post discusses the issue and provides information on how to fix it. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#c](https://daily.dev/tags/c), [#.net](https://daily.dev/tags/.net), [#.net-core](https://daily.dev/tags/.net-core), [#aspnetcore](https://daily.dev/tags/aspnetcore) [View this post on daily.dev](https://daily.dev/posts/warning-ad0001-analyzer-microsoft-aspnetcore-analyzers-routehandlers-routehandleranalyzer-threw-a-jodk8aqcd) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Warning AD0001: Analyzer 'Microsoft.AspNetCore.Analyzers.RouteHandlers.RouteHandlerAnalyzer' threw an exception of type 'System.InvalidOperationException'","url":"https://daily.dev/posts/warning-ad0001-analyzer-microsoft-aspnetcore-analyzers-routehandlers-routehandleranalyzer-threw-a-jodk8aqcd","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/warning-ad0001-analyzer-microsoft-aspnetcore-analyzers-routehandlers-routehandleranalyzer-threw-a-jodk8aqcd"},"datePublished":"2024-05-01T05:15:13.582Z","dateModified":"2024-05-09T08:39:06.345Z","description":"An upgrade to .NET 8 may cause a warning AD0001 related to the Microsoft.AspNetCore.Analyzers.RouteHandlers.RouteHandlerAnalyzer. 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