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Dotnet 9 apps blocked by Windows security Completely

Madhusudhan V 0 Reputation points
2025-04-21T08:09:29.75+00:00

Dotnet 9 applications unable to run as its blocked by Windows security. i tried with multiple simple applicaitons console all. all blocked,same app if i change to .net 8 then it works fine.

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I have visual studio, sdk ,os all updated to latest.

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Mostly this Problem started appearing from 18-April-2025 of Good friday onwards become blocked on these laptops. We have official OS all still why. please help to resolve this total blocker.

We have other applications built on same .net 9 blazor ,api and more will be deploying to azure appservices.

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Also on https://answers.microsoft.com/en-us/windows/forum/windows_11-security/dotnet-9-applications-unable-to-run-as-its-blocked/a035836e-5cdf-4be0-9e05-9d4f5738df54

Visual Studio Debugging
Visual Studio Debugging
Visual Studio: A family of Microsoft suites of integrated development tools for building applications for Windows, the web and mobile devices.Debugging: The act or process of detecting, locating, and correcting logical or syntactical errors in a program or malfunctions in hardware. In hardware contexts, the term troubleshoot is the term more frequently used, especially if the problem is major.
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