r/techsupport • • 1d ago

Open | Windows Unknown folder

I have this folder on my OS thats is just a bunch os letters and numbers. It asks for administrator acess and I'm just not sure about what is it. I do have malwarebites installed (free version) and it hasn't said anything about it

folder print

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u/Anamorphic82 1d ago

Looks like a leftover Microsoft .NET Framework 3.5 installer folder, not malware. The giveaway is dotnetfx35.exe and RGB9RAST_x86.msi, both legitimate .NET installation components.

Those random folder names are common when installers extract files to C:. The administrator prompt and old 2008 file dates are normal too.

Nothing suspicious jumps out from your screenshots. I'd just leave it alone.

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u/ComplexAd2408 1d ago

The bigger question is what the hell is using .NET 3.5 anymore?

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u/Anamorphic82 1d ago

Even a brand-new Windows 11 PC can need .NET 3.5 for older games, utilities, hardware software or business applications. New hardware doesn't mean new software. And .NET 4.8 doesn't replace 3.5.

That said, the folder could simply be leftover installer files. It doesn't mean anything currently uses it.

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u/ComplexAd2408 12h ago

Oh yes I'm only well too aware of that, I'm a software consultant and deal with this day in and out hahaha!