DLL

authbas.dll

Download and install authbas.dll to fix missing or corrupted DLL errors.

(45 Files Available)
Last Updated

Repository Analysis

Company
Microsoft Corporation
Product
Internet Information Services
Description
basic authentication provider
Architecture
x86 (32 bit) x86-64 (64 bit)
Metadata Consensus
45/45 Files 100%
Higher percentages indicate stronger agreement across versions. Browse repository metadata to compare differences between variants.

Frequently Asked Questions

What is authbas.dll?

Metadata analysis shows authbas.dll is a Dynamic Link Library (DLL) and is described as basic authentication provider .

DLL files (Dynamic Link Library) are used by Windows programs to share code and resources. It allows multiple applications to use the same functions, improving performance and reducing redundancy. Most errors occur because the DLL is missing, corrupted, or outdated.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 authbas.dll errors?

Most errors involving authbas.dll occur because the DLL is missing, corrupted, or outdated. In many cases, reinstalling the related application or replacing the DLL resolves the issue. The steps below cover the most common ways to fix DLL errors.

  • Software DLLs: Fully un-install the application and then re-install the latest version. If you are not sure what software is causing problems, check available metadata for clues. If this does not solve your issue, you can try downloading and installing the DLL manually.
  • Windows DLLs: Make sure Windows is fully updated, then open Windows Terminal or PowerShell as an administrator. Repair the Windows component store so SFC can pull clean files DISM /Online /Cleanup-Image /RestoreHealth and then scan all system files sfc /scannow to automatically repair problems.
How do I install authbas.dll?

To install authbas.dll, place the DLL file in the same folder as the application’s .exe file. If you are not sure which version (32-bit or 64-bit) to use, you can safely install both. If you dont know the application or this does not work, install the DLL to the appropriate Windows system folder.

  • Software Install (Recommended): If known, place the DLL file next to the application’s .exe C:\path\to\exe\authbas.dll.
  • 64-bit Install: Place 64-bit DLL files in the System32 folder, C:\Windows\System32\authbas.dll
  • 32-bit Install: Place 32-bit DLL files in the SysWOW64 folder, C:\Windows\SysWOW64\authbas.dll
How do I register authbas.dll?

Most DLL files do not need registration, but some DLLs are COM components and must be registered to work correctly. If registration is required, open Windows Terminal or PowerShell as an administrator.

  • 64-Bit DLL: Register the DLL file regsvr32 "C:\path\to\authbas.dll". (Drag a DLL to automatically fill the full path).
  • 32 Bit DLL: If you are registering a 32-bit DLL on 64-bit Windows, C:\Windows\SysWOW64\regsvr32 "C:\path\to\authbas.dll".

Latest Releases

authbas.dll
by Microsoft Corporation
for Internet Information Services
basic authentication provider
Version: 10.0.26013.1000 (WinBuild.160101.0800) Verified
Product Version: 10.0.26013.1000
Language: U.S. English (1033)
Uploaded: Sep 16, 2025   Size: 41.5KB
SHA256: d4ae76b27294c4d7eca50e59697581ca00bdc3ccaea35eea5db8ae33de5509f9
SHA1: 8a8e8ef099af9892a01e0ee90b6acf9761909c0e
MD5: adf549bfb89a6d02745278fade1a3026
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD
authbas.dll
by Microsoft Corporation
for Internet Information Services
basic authentication provider
Version: 10.0.26013.1000 (WinBuild.160101.0800) Verified
Product Version: 10.0.26013.1000
Language: U.S. English (1033)
Uploaded: Sep 12, 2025   Size: 70KB
SHA256: 37d0e08b81208560942f6ee580875f328f0ca8f28ab6733b63e3d7329b4db695
SHA1: 1fba0aaa7f2d8976f5958ed1c46dc2b20db0c4fc
MD5: b46f7c4671d68149f38c6cd171f930a6
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
authbas.dll
by Microsoft Corporation
for Internet Information Services
basic authentication provider
Version: 10.0.26100.1 (WinBuild.160101.0800) Verified
Product Version: 10.0.26100.1
Language: U.S. English (1033)
Uploaded: Nov 22, 2024   Size: 68KB
SHA256: 06ceb83773bf6795ce20a798e1dc008bfd3b3fb5c8c92302b109b910047698a9
SHA1: 902be2a7ca845cfc37f161bcd77bb29207667994
MD5: f13d148b2f04172c01597e7b9b254201
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
authbas.dll
by Microsoft Corporation
for Internet Information Services
basic authentication provider
Version: 10.0.26100.1 (WinBuild.160101.0800) Verified
Product Version: 10.0.26100.1
Language: U.S. English (1033)
Uploaded: Nov 22, 2024   Size: 33KB
SHA256: 2a1792c21dc3ecf5c756b8909ab0a3a74ec9c56c30ab4e3c7ab3c6e6fb0b8d40
SHA1: 5a65e8af2d4a7e2b004fab0234542392c52438ef
MD5: 52c762937f44c635b4fae14488205e20
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD
authbas.dll
by Microsoft Corporation
for Internet Information Services
basic authentication provider
Version: 10.0.26013.1000 (WinBuild.160101.0800) Verified
Product Version: 10.0.26013.1000
Language: U.S. English (1033)
Uploaded: May 20, 2024   Size: 41.4KB
SHA256: 4ecf6f9b98e27669cd1a213de54859b7138e0a30b020efa8b85b1a64aa123795
SHA1: 9d3a015246ed24d08b985dee28a1a1ff2967aae5
MD5: 17117caad99e674b823033a8b2df490a
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD