AgtUI.dll - Repair Issues and Download

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

AgtUI.dll file Dynamic Link Library. The file was developed by Microsoft for use with Windows software. Here you will find detailed information about the file and instructions how to proceed in the event of AgtUI.dll related errors on your device. You can also download AgtUI.dll file compatible with Windows Vista, Windows Vista devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows Vista, Windows Vista

File info

General information
Filename AgtUI.dll
File extension DLL
Type Dynamic Link Library
Description Dynamic Link Library
Program Windows Vista
Software Windows
Author Microsoft
Software version Vista
File size 2048
Oldest file 2006-11-02
Latest file 2006-11-02

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

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



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


Problems related to AgtUI.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 AgtUI.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.

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

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

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

  • Windows Vista: C:\Windows\MSAgent64\
  • Windows Vista: C:\Windows\MSAgent64\

If the steps did not solve your AgtUI.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 AgtUI.dll
System Windows Vista
File size 2048 bytes
Date -0001-11-30
File details
MD5 3d22208dbed71f6200314fa6eb79c4db
SHA1 3ca061ab91ecb24505982f7e831593441b39239e
SHA256 16e332f56f3b176e250e3d083adbb34934c0fbfd25cb05ab9d48cfc41a819e6b
CRC32 4dc9f59d
Example file location C:\Windows\MSAgent64\
Filename AgtUI.dll
System Windows Vista
File size 2048 bytes
Date -0001-11-30
File details
MD5 ffb3c1f283c496aec44e16361341bd5b
SHA1 0d98dd5306ce1e299933ae9e7e8acdcf10014f2d
SHA256 1f788d33aa736b18822ccc1446fd11f683b33162a1baaae4bc4f855b0170eda3
CRC32 015ef18e
Example file location C:\Windows\MSAgent64\