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Download AuthHost.exe to Fix Errors

Sometimes Windows system displays error messages regarding corrupted or missing AuthHost.exe 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 AuthHost.exe file can therefore effect in failed execution of the started process.

AuthHost.exe file Microsoft AuthHost. 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 AuthHost.exe related errors on your device. You can also download AuthHost.exe 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 AuthHost.exe
File extension EXE
Description Microsoft AuthHost
Software
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
Details
MIME type application/octet-stream
File type Executable application
System Windows NT 32-bit
Copyrights © Microsoft Corporation. All rights reserved.
Character set Unicode
Language cod English (U.S.)
AuthHost.exe

There are various types of errors related to AuthHost.exe file. AuthHost.exe 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 AuthHost.exe file. If you encounter one listed below (or similar), please consider the following suggestions.

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

AuthHost.exe

Error

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

OK

Problems related to AuthHost.exe 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 AuthHost.exe 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.

AuthHost.exe 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 AuthHost.exe 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 AuthHost.exe 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 AuthHost.exe 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 AuthHost.exe file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the AuthHost.exe 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 AuthHost.exe 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 AuthHost.exe 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 AuthHost.exe file

The last solution is to manually download and replace AuthHost.exe 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 AuthHost.exe file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of AuthHost.exe 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 AuthHost.exe 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 AuthHost.exe
System Windows 10
File size 114744 bytes
Date 2017-03-18
File details
MD5 3c14203ce508abeb8d0072df62567bb5
SHA1 1162a7b230dc6563fa4d932e093bc3645354225c
SHA256 ad98acdf423c0b323e58193f6be694d7e45e5f80e690682972a8a614f3b2b6f3
CRC32 25137137
Example file location C:\Windows\System32\
Filename AuthHost.exe
System Windows 8.1
File size 147192 bytes
Date 2014-11-21
File details
MD5 3b5d2c64c9361bed00f7b496811eef77
SHA1 f5fef8468de9b5fadb8097692e132fb60f1235e0
SHA256 65bf37a7ca9d20b78b0d75f5097d050bc97be238a5e582f05dd5f9c32abdeff2
CRC32 dd6e15f6
Example file location C:\Windows\System32\
Filename AuthHost.exe
System Windows 8
File size 103160 bytes
Date 2012-07-26
File details
MD5 f3c59cb6961b975377dc0e5776fbe41b
SHA1 b2f6ca07705a52eabea8fa97a54a7a9e8644265f
SHA256 cf9ac77e577e7c3628f168df22e3fb6e6b3d9cb6ad3995d80db5187bab9d8d51
CRC32 b714c745
Example file location 1: C:\Windows\System32\