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How to Download and Fix SimAuth.dll?

Sometimes Windows system displays error messages regarding corrupted or missing SimAuth.dll files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent SimAuth.dll file can therefore effect in failed execution of the started process.

SimAuth.dll file EAP SIM run-time dll. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of SimAuth.dll related errors on your device. You can also download SimAuth.dll file compatible with Windows 10, Windows 8.1, Windows 8 devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 10, Windows 8.1, Windows 8

File info

General information
Filename SimAuth.dll
File extension DLL
Description EAP SIM run-time dll
Software
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
Details
MIME type application/octet-stream
File type Dynamic link library
System Windows NT 32-bit
Copyrights © Microsoft Corporation. All rights reserved.
Character set Unicode
Language cod English (U.S.)
SimAuth.dll

There are various types of errors related to SimAuth.dll file. SimAuth.dll file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to SimAuth.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

  • SimAuth.dll is corrupted
  • SimAuth.dll cannot be located
  • Runtime Error - SimAuth.dll
  • SimAuth.dll file error
  • SimAuth.dll file cannot be loaded. Module was not found
  • cannot register SimAuth.dll file:
  • SimAuth.dll file could not be loaded
  • SimAuth.dll file doesn't exist

SimAuth.dll

Error

Application could not be started because SimAuth.dll file is missing. Reinstall the application to solve the problem.

OK

Problems related to SimAuth.dll can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing SimAuth.dll file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

SimAuth.dll file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Virus Scan

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with SimAuth.dll file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Windows Update

Installing relevant Microsoft Windows patches and updates may solve your problems related to SimAuth.dll file. Use dedicated Windows tool to perform the update.

  1. Go to the Windows "Start" menu
  2. Type "Windows Update" in the search field
  3. Choose the appropriate software program (name may vary depending on your system version)
  4. Check if your system is up to date. If any unapplied updates are listed, install them immediately.
  5. After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of SimAuth.dll or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to SimAuth.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the SimAuth.dll file with properly working version. To use the tool:

  1. Go to the Windows "Start" menu
  2. Type "cmd" in the search field
  3. Locate "Command Prompt" result – don't run it yet:
  4. Click the right mouse button and select "Run as Administrator" option
  5. Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Windows Recovery

Another approach is to restore system to previous state, before the SimAuth.dll file error occured. In order to restore your system, follow the instructions below

  1. Go to the Windows "Start" menu
  2. Type "System Restore" in the search field
  3. Start the system restore tool – it's name may differ depending on version of the system
  4. The application will guide you through the process – read the messages carefully
  5. After the process has finished, restart your computer.

If all the above-mentioned methods failed and the SimAuth.dll file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace SimAuth.dll file

The last solution is to manually download and replace SimAuth.dll file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded SimAuth.dll file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of SimAuth.dll file example directory paths.

  • Windows 10: C:\Windows\System32\
  • Windows 8.1: C:\Windows\System32\
  • Windows 8: 1: C:\Windows\System32\

If the steps did not solve your SimAuth.dll file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename SimAuth.dll
System Windows 10
File size 125952 bytes
Date 2017-03-18
File details
MD5 195940cc57e6b9c7c42a24f51e24069f
SHA1 de3c2bfb95a7fd91346878be423b3d329f1ef73f
SHA256 95a70d57f153fcbe687680a486236b30c274bee7081509c7e094e1c4ce85ed31
CRC32 0a250e05
Example file location C:\Windows\System32\
Filename SimAuth.dll
System Windows 8.1
File size 120832 bytes
Date 2014-11-21
File details
MD5 75ac927f6d308edbf2c8d6f2314af1b1
SHA1 b1b9e83f5adf8bf22ce9f4943775a9d8f52a87e5
SHA256 c9bffa6c66bef09d96e58605853a1301096bd2882d922f89fb555de90e0f4f0b
CRC32 350d51df
Example file location C:\Windows\System32\
Filename SimAuth.dll
System Windows 8
File size 116736 bytes
Date 2012-07-26
File details
MD5 a729c1d6e597a63b5cabe2009f88c8d4
SHA1 5825705e45cdbdfd717b18cbc1a0b25ed7c2579c
SHA256 f1deeb4fd18d509b3bccba4a063d8f723486cc196a199194facbd8e42f99d214
CRC32 6a69803a
Example file location 1: C:\Windows\System32\