ucrtbase.dll_
ucrtbase.dll Is Missing
Seeing ucrtbase.dll on Windows 10/11 means the OS detected "ucrtbase.dll Is Missing". Before reinstalling anything, work through the steps below — the fix is often simpler than it looks.
What Actually Happened
A shared support library is missing. Reinstalling the Universal C Runtime, part of Windows itself and restored via SFC/DISM solves this.
Symptoms
App fails to launch with 'ucrtbase.dll was not found'
Common Causes
- the Universal C Runtime, part of Windows itself and restored via SFC/DISM is missing or corrupted on this PC
How to Fix It
-
01
Reinstall the Universal C Runtime, part of Windows itself and restored via SFC/DISM from Microsoft official downloads
-
02
Run system repair:
sfc /scannow
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Root Cause Breakdown
Application dynamically linking against ucrtbase.dll failed at runtime entry.
Should You Worry?
Low risk. Only affects the specific application.
Power-User Tip
Install both x86 and x64 redistributables, even on 64-bit Windows.
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