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How to Download and Fix diagperf.dll.mui?

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

diagperf.dll.mui file Microsoft Performance Diagnostics. 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 diagperf.dll.mui related errors on your device. You can also download diagperf.dll.mui file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista 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 Vista

File info

General information
Filename diagperf.dll.mui
File extension MUI
Description Microsoft Performance Diagnostics
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.)
diagperf.dll.mui

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

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

diagperf.dll.mui

Error

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

OK

Problems related to diagperf.dll.mui 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 diagperf.dll.mui 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.

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

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

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

  • Windows 10: C:\Windows\System32\en-US\
  • Windows 8.1: C:\Windows\System32\en-GB\
  • Windows 8: 1: C:\Windows\System32\en-GB\
  • Windows 7: C:\Windows\System32\en-US\
  • Windows Vista: C:\Windows\System32\en-US\

If the steps did not solve your diagperf.dll.mui 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 diagperf.dll.mui
System Windows 10
File size 32768 bytes
Date 2017-03-18
File details
MD5 de62b08c6cdbdf9b62afe869af38db0b
SHA1 523b5d9d562a44796c62afff0af48d2a77af9ed1
SHA256 0bf1713dd41edc3903bdad4d5ffef466647b23113844c41f3e1e920772651aeb
CRC32 2622c045
Example file location C:\Windows\System32\en-US\
Filename diagperf.dll.mui
System Windows 8.1
File size 32256 bytes
Date 2014-11-21
File details
MD5 377a0a55798cc5dcefb5c3426075fa58
SHA1 aa5d4335fc1df4fb332873d9ee546b1fb5639108
SHA256 dd14c8417984335d08bd815a91405dcc74a1450d269f53032924164f17d95e6e
CRC32 84e2d6da
Example file location C:\Windows\System32\en-GB\
Filename diagperf.dll.mui
System Windows 8
File size 32256 bytes
Date 2012-07-26
File details
MD5 c403391aab71be44bb3a64e43a52fe77
SHA1 594e52ca6f9bbdf54870774b7fe32e7c1c794a39
SHA256 6304ab4df821e28177d23409ec2f1ffd5401c77bceae137fbae6cbd61a74d3ee
CRC32 ec683deb
Example file location 1: C:\Windows\System32\en-GB\
Filename diagperf.dll.mui
System Windows 7
File size 32768 bytes
Date 2011-04-12
File details
MD5 12007d162209baaa17607368f635e21c
SHA1 f11fd6ef54f257ea43757cf6b47a40a57a8bd432
SHA256 92391eebcfcf65fc5393bc582f809d2cf5f4840e8027f00003d302b8c76b462a
CRC32 c7ca72a3
Example file location C:\Windows\System32\en-US\
Filename diagperf.dll.mui
System Windows Vista
File size 32256 bytes
Date 2006-11-02
File details
MD5 49aadf406f2555d7477efdc8e39df134
SHA1 9aa76e48e5ed237094715d33f010445164706123
SHA256 7f8506eaec3a9228890136bd287b391fe61b15fcd3d2f704b9f15eac1a24d15d
CRC32 87e5b6b8
Example file location C:\Windows\System32\en-US\