eapp3hst.dll Troubleshoot and Download

Sometimes Windows system displays error messages regarding corrupted or missing eapp3hst.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 eapp3hst.dll file can therefore effect in failed execution of the started process.

eapp3hst.dll file Microsoft ThirdPartyEapDispatcher. 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 eapp3hst.dll related errors on your device. You can also download eapp3hst.dll file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista, Windows XP devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista, Windows XP

File info

General information
Filename eapp3hst.dll
File extension DLL
Description Microsoft ThirdPartyEapDispatcher
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
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.)

There are various types of errors related to eapp3hst.dll file. eapp3hst.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 eapp3hst.dll file. If you encounter one listed below (or similar), please consider the following suggestions.

  • eapp3hst.dll is corrupted
  • eapp3hst.dll cannot be located
  • Runtime Error - eapp3hst.dll
  • eapp3hst.dll file error
  • eapp3hst.dll file cannot be loaded. Module was not found
  • cannot register eapp3hst.dll file:
  • eapp3hst.dll file could not be loaded
  • eapp3hst.dll file doesn't exist



Application could not be started because eapp3hst.dll file is missing. Reinstall the application to solve the problem.


Problems related to eapp3hst.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 eapp3hst.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.

eapp3hst.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 eapp3hst.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 eapp3hst.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 eapp3hst.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 eapp3hst.dll file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the eapp3hst.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 eapp3hst.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 eapp3hst.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 eapp3hst.dll file

The last solution is to manually download and replace eapp3hst.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 eapp3hst.dll file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of eapp3hst.dll file example directory paths.

  • Windows 10: C:\Windows\System32\
  • Windows 8.1: C:\Windows\System32\
  • Windows 8: 1: C:\Windows\System32\
  • Windows 7: C:\Windows\SysWOW64\
  • Windows 7: C:\Windows\SysWOW64\
  • Windows Vista: ---
  • Windows Vista: ---
  • Windows XP: ---

If the steps did not solve your eapp3hst.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 eapp3hst.dll
System Windows 10
File size 238592 bytes
Date 2017-03-18
File details
MD5 53b656685c967671a9dee8b3a4a6a322
SHA1 fa8c72d8a27d1233475dd97faf71435e80001270
SHA256 c9a9377d2de45b006c523c6b9ca98ab5af5869087d9575f0f67489e18e6325bb
CRC32 d0454a52
Example file location C:\Windows\System32\
Filename eapp3hst.dll
System Windows 8.1
File size 250880 bytes
Date 2014-11-21
File details
MD5 62a10e44ba0cb1420ce81eea3b4c4cb5
SHA1 8e68e4993c504b199634fba546d75763f8788cad
SHA256 ed69cbc6e1db310eeae13c2048734bda55acf6f126926c69af69cb46cd7eff60
CRC32 56205f68
Example file location C:\Windows\System32\
Filename eapp3hst.dll
System Windows 8
File size 241664 bytes
Date 2012-07-26
File details
MD5 8d2c2341d7ff3f19872f59de728ebbd6
SHA1 3a56d7804864e3f80f6c7697e0412146e7cc9fad
SHA256 eda6fa8a690d44947130e25016f5f1973ad44e52c9c948fb9c913c6d685fecba
CRC32 58122d6d
Example file location 1: C:\Windows\System32\
Filename eapp3hst.dll
System Windows 7
File size 242176 bytes
Date -0001-11-30
File details
MD5 9b9ef57993ecc02ce7469f3f3ac3ce10
SHA1 98f7e1d9c7824def74d47e5e481ff08e1010c4b0
SHA256 59e878a5ad4f85984c3f5bb41973260bc1fe85bcf0b4de24238808e8fc9c0e4b
CRC32 ea2a01d6
Example file location C:\Windows\SysWOW64\
Filename eapp3hst.dll
System Windows 7
File size 348160 bytes
Date 2010-11-21
File details
MD5 cf1a231594e1b7d59d9279faa38ad4c2
SHA1 533bb2111155eb1e7a7eb7933a1348242a90b1f3
SHA256 90f6ba4395f688f66cd6dc1ea6c3c04780e65940fb6313fd00a89c7a9e98a6c8
CRC32 b0a7f40d
Example file location C:\Windows\SysWOW64\
Filename eapp3hst.dll
System Windows Vista
File size 291840 bytes
Date 2009-04-11
File details
MD5 05ecdc5250f707c729bb5d3b08285ea6
SHA1 13135f580e7ace1c68aa45fd969f10dcc66247b1
SHA256 d9e34d64e5c4d8f36d3e72ce0e1c3c589ce5c9b40d4de12828a445c5a6031522
CRC32 b3ae5166
Example file location ---
Filename eapp3hst.dll
System Windows Vista
File size 187904 bytes
Date -0001-11-30
File details
MD5 1303f1e8c79bdb50ea942b7494761eb8
SHA1 fb22c89408f3b563a86db9f20afc6abf0ac4a24f
SHA256 0f392506a2293f3cdaa05fb9f54881ee5cd359bd25a0e8d11369e98f7d1db7fc
CRC32 02ec6e03
Example file location ---
Filename eapp3hst.dll
System Windows XP
File size 184832 bytes
Date 2008-04-14
File details
MD5 7954a8b0657676e947403f0ac0f21755
SHA1 949bdd1bded1d3480336b1d9a4d84dd1b6f4a5f2
SHA256 d70b70fbcfb9589eb6031fb8b33b19f861212bac1e5b7c9d2af70fb22ae7901a
CRC32 07118df6
Example file location ---