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DLL

api-ms-win-core-fibers-l1-1-1.dll

Download and install api-ms-win-core-fibers-l1-1-1.dll to fix missing or corrupted DLL errors.

(72 Files Available)
Last Updated
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Repository Analysis

Company
Microsoft Corporation
Product
Microsoft® Windows® Operating System
Description
ApiSet Stub DLL
Architecture
x86-64 (64 bit) x86 (32 bit) ARM64
Metadata Consensus
72/72 Files 100%
Higher percentages indicate stronger agreement across versions. Browse repository metadata to compare variant differences.

Companies

  • Microsoft Corporation 72

Products

  • Microsoft® Windows® Operating System 72

Descriptions

  • ApiSet Stub DLL 72

Frequently Asked Questions

What is api-ms-win-core-fibers-l1-1-1.dll?

Metadata analysis shows api-ms-win-core-fibers-l1-1-1.dll is a Dynamic Link Library (DLL) developed by Microsoft Corporation for Microsoft® Windows® Operating System and is described as “ApiSet Stub DLL” .

DLL files (Dynamic Link Libraries) are shared core modules used by Windows programs to run efficiently without duplicating code. Most errors occur because the DLL is missing, corrupted, or outdated. In many cases, reinstalling the related application, repairing Windows, or replacing the DLL resolves the issue.

How do I fix missing DLL errors?
1

Software Fix

Fully uninstall and reinstall the program causing the error. If you are not sure what program is broken, look at the available file metadata above for hints. If a clean reinstall fails, download and install the DLL file manually.

2

Windows System Fix

Make sure Windows is fully updated. To repair system files automatically, right-click the Start menu, open PowerShell (Admin), and run these two commands in order:

Step A DISM /Online /Cleanup-Image /RestoreHealth
Step B sfc /scannow
How do I install DLL files?
1

Download & Extract

Download the file, right-click the folder, and extract all files to your computer.

2

Install the .DLL

Move the extracted DLL file into the root folder of the software that is giving you the error (where its .exe file is located), or place it in the system directory below:

32-bit → C:\Windows\SysWOW64
64-bit → C:\Windows\System32
3

Restart the Program

Close and reopen the program or game so Windows can look for and load the new DLL file.

How do I register DLL files?

Most DLL files do not need registration. However, if your file is a COM component and requires explicit system registration, follow these steps:

1

Open Terminal

Right-click the Start menu and open PowerShell (Admin) or Command Prompt (Admin).

2

Run Command

Type the command below for your file type and press Enter. You can drag and drop the DLL file directly into the terminal window to fill its path automatically.

64-bit regsvr32 "C:\path\to\filename.dll"
32-bit C:\Windows\SysWOW64\regsvr32 "C:\path\to\filename.dll"

Latest Releases

NEW
api-ms-win-core-fibers-l1-1-1.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 10.0.26100.6 (WinBuild.160101.0800)
Product Version: 10.0.26100.6
Language: U.S. English (1033)
Uploaded: Aug 21, 2026   Size: 22.1KB
SHA256: c0030d93ee980cc7e49d6077464801b154bd51463177426e256a40b2e9ed6b48
SHA1: 12b09602140cf9adcc043c9bb1fd9cc0cc600efa
MD5: ca31e13c1824a4eee02cd4d6a8ad43d3
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
NEW Verified
api-ms-win-core-fibers-l1-1-1.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 6.3.9600.16384 (winblue_rtm.130821-1623)
Product Version: 6.3.9600.16384
Language: U.S. English (1033)
Uploaded: Aug 20, 2026   Size: 16.3KB
SHA256: 013c0208591a005fc6ce5a704f3ac2542a6f495d0cc1d10ff2ffebf81890e435
SHA1: f2c32cbed206be0edfcad4a1f59f32839b7d56a5
MD5: 89e83bfbed33bafa6e88cd8dfdbd4807
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
NEW Verified
api-ms-win-core-fibers-l1-1-1.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 10.0.26100.8249 (WinBuild.160101.0800)
Product Version: 10.0.26100.8249
Language: U.S. English (1033)
Uploaded: Aug 18, 2026   Size: 22.4KB
SHA256: 7dcfbc643173049ea3d1cf6cd58a7831cb3fddd4c266eaaa2d16bf03a58b4e1f
SHA1: b1eed85703b93f0d2f5c048c1295343348003a76
MD5: 9c245bbeb7cfa27e3161140008be8595
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
NEW Verified
api-ms-win-core-fibers-l1-1-1.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 10.0.26100.8249 (WinBuild.160101.0800)
Product Version: 10.0.26100.8249
Language: U.S. English (1033)
Uploaded: Aug 18, 2026   Size: 12.9KB
SHA256: 0f9b831b286c4e54063277b9b7ca95aef62f4866be5e4da02c3337c6f0c2327e
SHA1: cbe7a76fd1931bc0f69f11eff1ea0d1b4752b79c
MD5: f4b200e798aeba10a8c9616a59fb4cde
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD
NEW Verified
api-ms-win-core-fibers-l1-1-1.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 10.0.28000.2526 (WinBuild.160101.0800)
Product Version: 10.0.28000.2526
Language: U.S. English (1033)
Uploaded: Aug 18, 2026   Size: 12.9KB
SHA256: d52d9033eee6b899eb833d5180fea2a597429f99779e3fa82558623f373cd21a
SHA1: e21e209ccf2075ce9c8d6bc1191e2f104dc4705e
MD5: bdf677dee8015e033f07e19b02d70139
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD