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Issue with visual studio professional 2022 | version :

Arun Kumar Maheshwari 0 Reputation points
2025-05-19T12:18:39.9366667+00:00

Hi Team,

I am encountering a recurring issue with Visual Studio Professional 2022 while working on my project. Initially, everything works as expected, but at some point, I start receiving the following error:

MissingMethodException: Method not found: 'Microsoft.Extensions.Configuration.IConfigurationBuilder Microsoft.Extensions.Configuration.FileConfigurationExtensions.SetBasePath(Microsoft.Extensions.Configuration.IConfigurationBuilder, System.String)' Here are the troubleshooting steps I’ve already tried:

Created a new (vanilla) project where everything works fine.

Verified the referenced DLL version to confirm that the SetBasePath method exists.

Cleaned both the Debug and Release folders, and also tried cloning the project to a different location.

Updated Visual Studio to the latest version, which temporarily resolved the issue — but the error resurfaced shortly after.

Despite these efforts, the issue persists. I searched online but could not find a concrete or consistent solution. I’m reaching out to request your assistance in identifying the root cause and providing a reliable fix for this issue.

Please let me know if you need any additional information from my side.

Looking forward to your response.

Best regards,

A .net developer.

C#
C#
An object-oriented and type-safe programming language that has its roots in the C family of languages and includes support for component-oriented programming.
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  2. Michael Taylor 59,566 Reputation points
    2025-05-19T15:18:56.22+00:00

    If this is a build issue with your project then it sounds like you're solving the problem the wrong way. The functionality you mention is part of one of the NuGet packages you will have installed as part of your project. Please provide us information about your project including:

    • Confirmation of where the error is occurring (starting VS, compiling your code, etc)
    • What type of project you have (e.g. Winforms, ASP.NET Core)
    • What framework version you are using (e.g. NET 8, NET 10)
    • What NuGet packages your project is referencing
    • You said it works for a while and then stops, what changed between the last time it works and when it stops working

    The particular functionality you are having an issue with is contained in the `Microsoft.Extensions.Configuration.FileExtensions which is generally indirectly referenced by one of the other core packages you are using. But without project information it is hard to say.

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