Download ucrtbase.dll for Windows 10 1507 (64-bit): the genuine file from Microsoft
ucrtbase.dll version 10.0.10240.20793, the exact file Windows Windows 10 1507 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
10.0.10240.20793- Windows release
- Windows 10 1507
- Delivered by
KB5066837- Build
- 64-bit
- ZIP size
- 983,456 bytes
- Signed by
- Microsoft
- Source
- msdl.microsoft.com (Microsoft symbol server)
- SHA-256
52e2e7dc27387b127a5686a7d0a67db1d4efa54864805b284c22068605a46a09
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.