Show file extensions

Shows .exe, .pdf and other extensions in File Explorer.

SafeSecurityRecommendedStrong evidence

Applying it needs Nexus Standard or Pro. Every plan can read it here and undo it in Restore Center. Compare plans

What it changes

HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = 0

Before anything is written, the review screen shows this setting's current value on your PC next to the new one.

Why it helps

Spot fake 'document.pdf.exe' files at a glance.

Trade-offs

Renaming a file can change its extension if you're careless.

Evidence

Strong evidenceExpected impact:Small

Strong evidence means: documented by microsoft or consistently measurable. Expected impact is small (1 of 3): how much it can matter when this is actually the bottleneck on your PC, not a promised gain.

Is it in a pack?

Yes. It's in the Security hardening pack, so that pack and Optimize everything include it. You can still untick it in the review screen.

How to undo

Switch the tweak off in Nexus, or open Restore Center and restore this change (or choose Undo last change). Nexus writes back the original value it recorded before applying, not a generic default, then reads it back to confirm.

Apply it safely with Nexus

Preview the exact change, apply it with its original value recorded, and undo it in one click if you change your mind.

Download free