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DLL

API-MS-Win-Security-Lsalookup-L2-1-1.dll

Download and install API-MS-Win-Security-Lsalookup-L2-1-1.dll to fix missing or corrupted DLL errors.

(25 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) ARM64 x86 (32 bit)
Metadata Consensus
25/25 Files 100%
Higher percentages indicate stronger agreement across versions. Browse repository metadata to compare variant differences.

Companies

  • Microsoft Corporation 25

Products

  • Microsoft® Windows® Operating System 25

Descriptions

  • ApiSet Stub DLL 25

Frequently Asked Questions

What is API-MS-Win-Security-Lsalookup-L2-1-1.dll?

Metadata analysis shows API-MS-Win-Security-Lsalookup-L2-1-1.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 Most errors occur because the DLL is missing, corrupted, or outdated.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 Uploads

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

NEW
API-MS-Win-Security-Lsalookup-L2-1-1.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: Sep 1, 2026   Size: 22.1KB
SHA256: 0061372cf2841550a28cf286a342b942a4de91a0368466f075ccaafc52b45ecf
SHA1: c7a8cf7b71af117dfb3624ebf4b8dfbc73e7c54e
MD5: d565e9a9ec66c4de400d006b36cbe4d5
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
API-MS-Win-Security-Lsalookup-L2-1-1.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 10.0.28000.4 (WinBuild.160101.0800)
Product Version: 10.0.28000.4
Language: U.S. English (1033)
Uploaded: Jul 4, 2026   Size: 15.2KB
SHA256: 0d9f2196daa778eebde743c9d7bc094eb0182ad022f92cbc7f6c1308bc392e75
SHA1: fd53776f1713e8eb007cf2ffbe54d930a93bd160
MD5: 7bc6ea1885c2daadea0d8ec4173fbba2
ARM 64 Bit
AArch64
DOWNLOAD
API-MS-Win-Security-Lsalookup-L2-1-1.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 10.0.28000.4 (WinBuild.160101.0800)
Product Version: 10.0.28000.4
Language: U.S. English (1033)
Uploaded: Jul 3, 2026   Size: 6.7KB
SHA256: e30470ea306c54ac61034fa59c356c966243e4afcaeea4cfce9d0b1f3903ddd6
SHA1: 12b1741afeb65bb011e8bebfd84e059380428c9f
MD5: 77e1ed770f703e4a54fb2a73c685fe5b
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD
API-MS-Win-Security-Lsalookup-L2-1-1.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 10.0.28000.4 (WinBuild.160101.0800)
Product Version: 10.0.28000.4
Language: U.S. English (1033)
Uploaded: Jul 3, 2026   Size: 16.2KB
SHA256: 902bc703ac400db70ecb34d873ab53ef72241c0edb3183d271203ea3d781083d
SHA1: b46ae1d5e879dd1b5974f37e4680005dfb59dfc3
MD5: 59053082247ff9df9e35f8714dd898e4
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
API-MS-Win-Security-Lsalookup-L2-1-1.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
ApiSet Stub DLL
Version: 10.0.26100.2 (WinBuild.160101.0800)
Product Version: 10.0.26100.2
Language: U.S. English (1033)
Uploaded: Apr 17, 2026   Size: 16.2KB
SHA256: 950028c253dd94cdbd6d15b9d492da63507b1895b17287f65d48cfcdf8e6d485
SHA1: 915f507c2341d7504ecbb84be3b66ad70403f396
MD5: 11b4e340b20cfde5c68443a146969b5f
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD