DLL

authanon.dll

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

(43 Files Available)
Last Updated

Repository Analysis

Company
Microsoft Corporation
Product
Internet Information Services
Description
anonymous authentication provider
Architecture
x86 (32 bit) x86-64 (64 bit)
Metadata Consensus
43/43 Files 100%
Higher percentages indicate stronger agreement across versions. Browse repository metadata to compare differences between variants.

Frequently Asked Questions

What is authanon.dll?

Metadata analysis shows authanon.dll is a Dynamic Link Library (DLL) and is described as anonymous 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 Most errors occur because the DLL is missing, corrupted, or outdated.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 authanon.dll errors?

Most errors involving authanon.dll occur because the DLL is missing, corrupted, or outdated.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 authanon.dll?

To install authanon.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\authanon.dll.
  • 64-bit Install: Place 64-bit DLL files in the System32 folder, C:\Windows\System32\authanon.dll
  • 32-bit Install: Place 32-bit DLL files in the SysWOW64 folder, C:\Windows\SysWOW64\authanon.dll
How do I register authanon.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\authanon.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\authanon.dll".

Latest Releases

authanon.dll
by Microsoft Corporation
for Internet Information Services
anonymous 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: 40KB
SHA256: f229c9ff7baed59302e78e81cb8e980f51ef6bbc5bcf44d1a7d11068c9519ca1
SHA1: c9bfdaa9c48b0d764dde114c40c6282861795ab9
MD5: d3cdf3392c04116bfe48fc772cc6440a
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD
authanon.dll
by Microsoft Corporation
for Internet Information Services
anonymous 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: e55b88e1ee072f7f3d2f9571d9e5806910007b1eacde2505d2d17b7b52cfc799
SHA1: 651832428a204fd1c0f79073059b2524879e0444
MD5: be23d898cf835ab32baa452fe93f09db
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
authanon.dll
by Microsoft Corporation
for Internet Information Services
anonymous 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: a490cad12559c5dd1606cc690bf16c354a44c0ba8227061ad2b305d8e08f69b3
SHA1: d011a3b0a423eb3ea27ce0171d56670a48a60997
MD5: ab1db50026ad1e1001bdb00b319edc91
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
authanon.dll
by Microsoft Corporation
for Internet Information Services
anonymous 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: 32KB
SHA256: 995f0218c8d537f26e70071a74cbbbfdf4c5a8167c5b40784185999173f2f7ed
SHA1: 4a5d15659e47734736e70a4f541bc043cee7fa08
MD5: ed3073bd7efb6f92bed850416c15596c
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD
authanon.dll
by Microsoft Corporation
for Internet Information Services
anonymous 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: 39.9KB
SHA256: c1328d24e8ab4d9499936354477fd65329b8745ecbcce1576d68819dc2a9f341
SHA1: e473c74f93257c814a5c4510799de39be6d59962
MD5: b1a507f83d7f4e1f36730930e4489083
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD