perfi.dat - How to Fix? Download Now

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

perfi.dat file Game Data. 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 perfi.dat related errors on your device. You can also download perfi.dat 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 perfi.dat
File extension DAT
Type Dynamic Link Library
Description Game Data
Program Windows 10
Software Windows
Author Microsoft
Software version 10
File size 297062
Oldest file 2006-11-02
Latest file 2017-03-18

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

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



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


Problems related to perfi.dat 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 perfi.dat 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.

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

The last solution is to manually download and replace perfi.dat 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 perfi.dat file.

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

  • Windows 10: C:\Windows\inf\PERFLIB\0000\
  • Windows 8.1: C:\Windows\inf\PERFLIB\0000\
  • Windows 8: 1: C:\Windows\inf\PERFLIB\0000\
  • Windows 7: ---
  • Windows Vista: ---

If the steps did not solve your perfi.dat 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 perfi.dat
System Windows 10
File size 297062 bytes
Date 2017-03-18
File details
MD5 56c3b96dd714b0da77c0b9fb0d392c86
SHA1 6dfd6e883c67ea4aef8a03d28874a677441e512f
SHA256 1bc70ca290a7b4afc37049a8435c81d9b863520609d2e4f627d08cd21c07a58e
CRC32 86f64851
Example file location C:\Windows\inf\PERFLIB\0000\
Filename perfi.dat
System Windows 8.1
File size 296742 bytes
Date 2014-11-21
File details
MD5 6b98e5694dedc80e39de706a22e46e53
SHA1 1c3ff5fc3f3c95f425b7db776fee3e6244005605
SHA256 45608bc6708df3a38d2d6611cb3e10c82c2fd8209d75aff6b1c45189c2ad1364
CRC32 85c0ba7c
Example file location C:\Windows\inf\PERFLIB\0000\
Filename perfi.dat
System Windows 8
File size 296742 bytes
Date 2012-07-26
File details
MD5 0426eb51a91cd86da44683f853a003b6
SHA1 689bec8c004dc620d996c5b75bd398bcb1bd7fe8
SHA256 99502f559e2b0e6161380bab8f0bace1ee78360bf3a6f51dab6f37493bc25412
CRC32 3491eb6c
Example file location 1: C:\Windows\inf\PERFLIB\0000\
Filename perfi.dat
System Windows 7
File size 291294 bytes
Date 2011-04-12
File details
MD5 f9a8f04d57346b7673305cfc1575ff6e
SHA1 004b55023fc3d7984c693d035075bbd581401143
SHA256 ef67b758b221755ea2ba2bdee4bd062832e77833fae08cef9113bfb96f2599bd
CRC32 72570994
Example file location ---
Filename perfi.dat
System Windows Vista
File size 287440 bytes
Date 2006-11-02
File details
MD5 ac344dcdbe5619b7aaffd5b8005b50c4
SHA1 0507684bee7dd984e700b934454cb94d3ebcd335
SHA256 ad544dc8137bd1b9d44bc2dc69d9d70910d0b9fb0bd92a7aca9b03c528d676f4
CRC32 686f7c55
Example file location ---