Fix Ammcauth.dll DLL Errors and Download Now

Last Updated: 12/05/2023
[Reading Time Required: 3.5 minutes]

ammcauth.dll, also known as a Dynamic Link Library file, was created by AOMEI Technology for the development of AOMEI Backupper 5.3. DLL files fall under under the Win32 DLL (Dynamic Link Library) file type category.

The initial introduction of ammcauth.dll released in AOMEI Backupper 5.3 was for Windows 10 on 10/08/2019. According to our records, this is the primary and most recent file release from AOMEI Technology.

In this short article, you will discover detailed file information, steps for troubleshooting DLL file problems with ammcauth.dll, and list of free downloads for every version that exists in our comprehensive file directory.

File Analysis Provided by Jason Geater (Author)

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File Overview

General Information
File Name: ammcauth.dll
File Extension: DLL file extension
File Type: Dynamic Link Library
Description: Dynamic Link Library
MIME Type: application/octet-stream
User Popularity Rating:
Developer and Software Information
Software Program: AOMEI Backupper 5.3
Developer: AOMEI Technology
Software: AOMEI Backupper
Software Version: 5.3
File Details
Entry Point: 0x1a2ea
Code Size: 118784

What are ammcauth.dll Error Messages?

Dynamic Link Library ammcauth.dll Errors

ammcauth.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like ammcauth.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like MpSigStub.exe - to follow. These files were created so that multiple programs (eg. AOMEI Backupper) could share the same ammcauth.dll file, saving valuable memory allocation, therefore making your computer run more efficiently.

Unfortunately, what makes DLL files so convenient and efficient, also makes them extremely vulnerable to problems. If something happens to a shared DLL file, either it goes missing or gets corrupted in some way, it can generate a "runtime" error message. Runtime is pretty self-explanatory; it means that these errors are triggered when ammcauth.dll is attempted to be loaded either when AOMEI Backupper is starting up, or in some cases already running. Some of the most common ammcauth.dll errors include:

Your ammcauth.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with AOMEI Backupper), or deleted by a malware infection. Furthermore, ammcauth.dll file corruption could be caused from a power outage when loading AOMEI Backupper, system crash while loading ammcauth.dll, bad sectors on your storage media (usually your primary hard drive), or quite commonly, a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

How to Fix ammcauth.dll Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your ammcauth.dll issue. These troubleshooting steps are listed in the recommended order of execution.

Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. When you see the search box, type "System Restore" and press "ENTER".
  3. In the search results, find and click System Restore.
  4. Please enter the administrator password (if applicable / prompted).
  5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
  6. Restore your computer to that backup image.

If the Step 1 fails to resolve the ammcauth.dll error, please proceed to the Step 2 below.

Step 2: If recently installed AOMEI Backupper (or related software), uninstall then try reinstalling AOMEI Backupper software.

You can uninstall AOMEI Backupper software by following these instructions (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. In the search box, type "Uninstall" and press "ENTER".
  3. In the search results, find and click "Add or Remove Programs"
  4. Find the entry for AOMEI Backupper 5.3 and click "Uninstall"
  5. Follow the prompts for uninstallation.

After the software has been fully uninstalled, restart your PC and reinstall AOMEI Backupper software.

If this Step 2 fails as well, please proceed to the Step 3 below.

AOMEI Backupper 5.3

AOMEI Technology

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many ammcauth.dll error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

  1. Hit the Windows Start button
  2. In the search box, type "Update" and press "ENTER".
  3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
  4. If updates are available for download, click "Install Updates".
  5. After the update is completed, restart your PC.

If Windows Update failed to resolve the ammcauth.dll error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

If Those Steps Fail: Download and Replace Your ammcauth.dll File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate ammcauth.dll file version. We maintain a comprehensive database of 100% malware-free ammcauth.dll files for every applicable version of AOMEI Backupper. Please follow the steps below to download and properly replace you file:

  1. Locate your Windows operating system version in the list of below "Download ammcauth.dll Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy this file to the appropriate AOMEI Backupper folder location:
    Windows 10: C:\Program Files (x86)\AOMEI Backupper\
  4. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.

GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve ammcauth.dll problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.

Download ammcauth.dll Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying ammcauth.dll to your appropriate Windows system directory. AOMEI Technology typically does not release AOMEI Backupper DLL files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing ammcauth.dll and all other DLL files for AOMEI Backupper. An incorrectly installed DLL file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10

Files Related to ammcauth.dll

DLL Files Related to ammcauth.dll

File Name Description Software Program (Version) File Size (bytes) File Location
api-ms-win-core-dateti... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 11112 C:\Windows\System32\Sysprep\Panther\
UsbDetect.dll Dynamic Link Library AOMEI Backupper 5.3 78936 C:\Program Files\WindowsApps\Microsoft.XboxApp_...
api-ms-win-crt-conio-l... ApiSet Stub DLL Microsoft® Windows® Operating System (10.0.17134.12) 12136 C:\Users\Tester\AppData\Local\
ucrtbase.dll Microsoft® C Runtime Library Microsoft® Windows® Operating System (10.0.17134.12) 1165160 C:\Windows\Microsoft.NET\Framework\v1.1.4322\
BrLog.dll Dynamic Link Library AOMEI Backupper 5.3 102488 C:\Program Files\WindowsApps\Microsoft.GetHelp_...

Other Files Related to ammcauth.dll

File Name Description Software Program (Version) File Size (bytes) File Location
cht_boot.ttf TrueType Font AOMEI Backupper 5.3 3875788 C:\Program Files (x86)\AOMEI Backupper\msbios\F...
setupact.log Log AOMEI Backupper 5.3 62521 C:\Windows\Panther\UnattendGC\
setupact.log Log AOMEI Backupper 5.3 16387 C:\Windows\System32\Sysprep\Panther\
SA.DAT Game Data AOMEI Backupper 5.3 6 C:\WINDOWS\Tasks\
EtwRTEventLog-System.etl Microsoft Event Trace Log AOMEI Backupper 5.3 432 C:\Windows\System32\LogFiles\WMI\RtBackup\


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