Download ucrtbase.dll for Windows 10 1511 (64-bit): the genuine file from Microsoft
ucrtbase.dll version 10.0.10586.1478, the exact file Windows Windows 10 1511 uses, downloaded unchanged from Microsoft's symbol server and checked against its published checksum. Read what it is, then the download starts by itself.
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What you are downloading
- File
ucrtbase.dll(ZIP with README)- Version
10.0.10586.1478- Windows release
- Windows 10 1511
- Delivered by
KB4093109- Build
- 64-bit
- ZIP size
- 995,272 bytes
- Signed by
- Microsoft
- Source
- msdl.microsoft.com (Microsoft symbol server)
- SHA-256
c657fe3e7f2dda42f5e7ee71d297d0ab4484d9e3db62fb13ddee6a0082ca47c9
Before you download
- Windows repairs its own files: run sfc /scannow, then DISM /Online /Cleanup-Image /RestoreHealth in an administrator window, and install the latest update. That is the fix the ucrtbase.dll page recommends.
- Use this copy when a program needs the file in its own folder, or to compare it with yours. It must match your Windows release and build: x64 is for 64-bit programs on 64-bit Windows. A 32-bit program needs the x86 set, even on a 64-bit PC.
- Do not copy it into System32 or SysWOW64: Windows protects those folders and the next update replaces the file anyway.