Configuration system failed to initialize : c#

Solution :

Search your application’s product name inside "C:\Users \#Username#\AppData\Local" and delete user.config, then Start your app again.

There are some other special directories which are also contains the temp config files.

VB.NET Code : Label1.Text = My.Computer.FileSystem.SpecialDirectories.AllUsersApplicationData


Result is [w10 64-bit] = C:\ProgramData\Microsoft\WindowsApplication1\

Using Environment…

VB.NET Code : Label2.Text = Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData)

Result is [w10 64-bit] = C:\ProgramData


VB.NET Code : Label2.Text = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData)


Result is [w10 64-bit] = C:\Users\venice\AppData\Local


VB.NET Code : Label2.Text = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)


Result is [w10 64-bit] = C:\Users\venice\AppData\Roaming

Note : Results will be same if OS (W7 64-bit, w8 64-bit)



If there is no user.config then also it throws this error.

Go through this article : The exception was configuration system failed to initialize.

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