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DLL

api-ms-win-security-lsalookup-l1-1-0.dll

Download and install api-ms-win-security-lsalookup-l1-1-0.dll to fix missing or corrupted DLL errors.

(3 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)
Metadata Consensus
3/3 Files 100%
Higher percentages indicate stronger agreement across versions. Browse repository metadata to compare variant differences.

Companies

  • Microsoft Corporation 3

Products

  • Microsoft® Windows® Operating System 3

Descriptions

  • ApiSet Stub DLL 3

Frequently Asked Questions

What is api-ms-win-security-lsalookup-l1-1-0.dll?

Metadata analysis shows api-ms-win-security-lsalookup-l1-1-0.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 Most errors occur because the DLL is missing, corrupted, or outdated.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 Uploads

Browse all files to filter by metadata and to view the latest version available.

NEW Verified
api-ms-win-security-lsalookup-l1-1-0.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 6.1.7600.16385 (win7_rtm.090713-1255)
Product Version: 6.1.7600.16385
Language: U.S. English (1033)
Uploaded: Aug 27, 2026   Size: 16.8KB
SHA256: 7e6dc0599a54051537192026fb030dbaa5769bcb19e30f8bbfbaeb1d5359b077
SHA1: 4694782ae85c4bb1aa3e3fdecb123781d423a5a3
MD5: dd64adb5549af42a0a5e4b1f540cc3db
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
Verified
api-ms-win-security-lsalookup-l1-1-0.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 6.1.7600.16385 (win7_rtm.090713-1255)
Product Version: 6.1.7600.16385
Language: U.S. English (1033)
Uploaded: Oct 13, 2025   Size: 16.5KB
SHA256: a572e839e0fad88cbf63034f61921a7882a5f6600bcbb7ee12b17e5a764f86fb
SHA1: 0377718f56f0fbf81642c71f950356c15b0472d3
MD5: 446b1c4b877e8936f85ade102a74e4bc
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
Verified
api-ms-win-security-lsalookup-l1-1-0.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 6.2.9200.16384 (win8_rtm.120725-1247)
Product Version: 6.2.9200.16384
Language: U.S. English (1033)
Uploaded: Sep 24, 2023   Size: 3KB
SHA256: 53bcd99361ebcd790a8d393641cee9f752ace81a76de034389a431aa12e37f7f
SHA1: bb6ce665bc23feddd3726e0e1436dc0ac67e6881
MD5: f76b058480693adfa0df8456c8198afc
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD