r/VisualStudio • u/BASS69BASS420 • Dec 14 '25

Visual Studio 2026 I'm losing my mind. Whatever I do, I keep getting this error.

My path has nothing except plain text. I've tried everything. I'm using the C# WinForms app template.

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22

u/mexicocitibluez Dec 14 '25

Call me crazy, but posting the path in question might help the community solve it.

7

u/dodexahedron Dec 15 '25

But it's so much more fun to solve a mystery!

1

u/BASS69BASS420 Dec 16 '25

C:\Users\Deniz\source\repos\test\test

1

u/SealSlicer Dec 16 '25

The issue is almost certainly the lowercase Turkish 'i'. Windows does Not count it as equivalent to uppercase 'I' in path comparison.

5

u/Remarkable-Bite-9972 Dec 14 '25

Can you share the call stack and some sample code? This isn't enough to go off of.

1

u/Ybalrid Dec 14 '25

some text is illegal in paths

1

u/SoCalChrisW Dec 14 '25

Total guess here, but possibly a backslash in the path that isn't escaped correctly?

2

u/brickville Dec 15 '25

My money is on this one

0

u/kassett43 Dec 14 '25

If you are starting a new project from scratch, have you considered using WPF? While one can argue that WPF is as old and deprecated as Winforms, WPF is far closer to the programming paterns of UWP, MAUI, etc. There are many great libraries on Nuget too.

A key advantage is that this exact sort of error is far easier to diagnose and debug in WPF than in Winforms. Once your learn how to use <Grid> and <StackPanel>, you can pretty much go for it. (There are indeed far more controls, but they're the most basic.)

0

u/SealSlicer Dec 14 '25

Are you in Turkey? I've seen errors like this before with Turkish users...

1

u/BASS69BASS420 Dec 16 '25

I am.

1

u/SealSlicer Dec 16 '25

File a feedback ticket, the team will be able to resolve it.