DLL

msmpeg2ac3dec.dll

Download and install msmpeg2ac3dec.dll to fix missing or corrupted DLL errors.

(7 Files Available)
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Repository Analysis

Company
Microsoft Corporation
Product
Microsoft® Windows® Operating System
Description
Microsoft DTV-DVD Audio Decoder
Architecture
x86 (32 bit) x86-64 (64 bit)
Metadata Consensus
7/7 Files 100%
Higher percentages indicate stronger agreement across versions. Browse repository metadata to compare variant differences.

Frequently Asked Questions

What is msmpeg2ac3dec.dll?

Metadata analysis shows msmpeg2ac3dec.dll is a Dynamic Link Library (DLL) developed by Microsoft Corporation for Microsoft® Windows® Operating System and is described as “Microsoft DTV-DVD Audio Decoder” .

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 Most errors occur because the DLL is missing, corrupted, or outdated.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

msmpeg2ac3dec.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
Microsoft DTV-DVD Audio Decoder
Version: 10.0.26100.8737 (WinBuild.160101.0800) Verified
Product Version: 10.0.26100.8737
Language: U.S. English (1033)
Uploaded: Jul 10, 2026   Size: 939.4KB
SHA256: b6ffb9698b20c40979089b4adefa737fd186b6d7eb9d0420de4292be5c14c6eb
SHA1: 29ff347e565c125c35d06897e5678cef398d3baf
MD5: e6b42cdf6bb7aa92135cf9f18b4164f1
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD
msmpeg2ac3dec.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
Microsoft DTV-DVD Audio Decoder
Version: 10.0.26100.8737 (WinBuild.160101.0800) Verified
Product Version: 10.0.26100.8737
Language: U.S. English (1033)
Uploaded: Jul 10, 2026   Size: 1.1MB
SHA256: a865084510547c270633079d8dff6e18f9f750711263bc3cf6a9425d665d5eb2
SHA1: 7f12471c45297802a71b592cf8864661bc98ded7
MD5: 1e41a95fe45723a15b95c45755c97126
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
msmpeg2ac3dec.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
Microsoft DTV-DVD Audio Decoder
Version: 10.0.26100.5074 (WinBuild.160101.0800) Verified
Product Version: 10.0.26100.5074
Language: U.S. English (1033)
Uploaded: Sep 11, 2025   Size: 954.9KB
SHA256: 30a6b491680fc4d5eebc0678e83f1711ac5584bf0c0486a0f7d0bc40615f5552
SHA1: 24dd3c931908efa646e4307b200214ce788e2ede
MD5: d65ae00c6015d74d3cb766697ed2c317
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD
msmpeg2ac3dec.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
Microsoft DTV-DVD Audio Decoder
Version: 10.0.26100.5074 (WinBuild.160101.0800) Verified
Product Version: 10.0.26100.5074
Language: U.S. English (1033)
Uploaded: Sep 11, 2025   Size: 1.1MB
SHA256: cf8d1a50428c99e2bbe1bb09d93814be37130b5fc4919c8f6d932b0f706e1f66
SHA1: d2f6dc1b1d8e1f495bccf55b7214b525e046130b
MD5: 0d5f7a8ba348141ad88909105bf77faa
x64 – 64 Bit
AMD64, x86-64
DOWNLOAD
msmpeg2ac3dec.dll
by Microsoft Corporation
for Microsoft® Windows® Operating System
Microsoft DTV-DVD Audio Decoder
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: 848.4KB
SHA256: 079f0bd6d40f048f28dd040da5c438b330db8c4a34347f89d260b5f2f6d79dc2
SHA1: a89e1ec41c76ab10ee170a8d40135bbcff11b4eb
MD5: 9f2fe8b5b707ed89ee489e2e9fdae051
x86 – 32 Bit
IA-32, 32-bit
DOWNLOAD