How to Download and Fix Perfd.dat Errors

Last Updated: 11/26/2023
[Time Required for Reading: 3.5 minutes]

Game Data files such as perfd.dat utilize the DAT file extension. This file is considered a Dynamic Link Library (Game Data) file, and was first created by Microsoft for the Windows 10 software package.

perfd.dat was first released for Windows Vista Operating System on 11/08/2006 with Windows Vista. The latest file update released for Windows 10 was on 07/29/2015 [file version 10]. perfd.dat is included with Windows 10, Windows 8.1, and Windows 8.

This article discusses complete file details, DAT file troubleshooting instructions for problems with perfd.dat, and a comprehensive set of free downloads for every file version that has been catalogued by our team.

File Analysis Provided by Jason Geater (Author)


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File Overview


General Information
File Name: perfd.dat
File Extension: DAT file extension
File Type: Dynamic Link Library
Description: Game Data
User Popularity Rating:
 
Developer and Software Information
Software Program: Windows 10
Developer: Microsoft
Software: Windows
Software Version: 10
File Details
File Size (Bytes): 33424
Oldest File Date: 11/02/2006
Latest File Date: 03/18/2017


What are perfd.dat Error Messages?


Dynamic Link Library perfd.dat Errors

perfd.dat is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like perfd.dat, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like sapisvr.exe - to follow. These files were created so that multiple programs (eg. Windows) could share the same perfd.dat file, saving valuable memory allocation, therefore making your computer run more efficiently.

Unfortunately, what makes DLL files so convenient and efficient, also makes them extremely vulnerable to problems. If something happens to a shared DAT file, either it goes missing or gets corrupted in some way, it can generate a "runtime" error message. Runtime is pretty self-explanatory; it means that these errors are triggered when perfd.dat is attempted to be loaded either when Windows is starting up, or in some cases already running. Some of the most common perfd.dat errors include:

Your perfd.dat file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Windows), or deleted by a malware infection. Furthermore, perfd.dat file corruption could be caused from a power outage when loading Windows, system crash while loading perfd.dat, bad sectors on your storage media (usually your primary hard drive), or quite commonly, a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.



How to Fix perfd.dat Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your perfd.dat issue. These troubleshooting steps are listed in the recommended order of execution.


Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. When you see the search box, type "System Restore" and press "ENTER".
  3. In the search results, find and click System Restore.
  4. Please enter the administrator password (if applicable / prompted).
  5. Follow the steps in the System Restore Wizard to choose a relevant restore point.
  6. Restore your computer to that backup image.

If the Step 1 fails to resolve the perfd.dat error, please proceed to the Step 2 below.

Step 2: Run SFC (System File Checker) to restore the corrupt or missing perfd.dat file.

System File Checker is a utility included with every Windows version that allows you scan and restore corrupted system files. Use the SFC tool to fix missing or corrupt perfd.dat files (Windows XP, Vista, 7, 8, and 10):

  1. Hit the Windows Start button
  2. In the search box, type "cmd" but DO NOT PRESS "ENTER".
  3. Press and hold "CTRL-Shift" on your keyboard while pressing "ENTER".
  4. You'll be prompted with a permission dialog box.
  5. In the box, click "YES".
  6. You should have a black screen with a blinking cursor.
  7. In that black screen, type "sfc /scannow" and hit "ENTER".
  8. SFC will begin scanning for perfd.dat issues and any other system file problems.
  9. Follow any on-screen commands to complete the process.

Please be aware that this scan might take a while, so please be patient while it is working.

If this Step 2 fails as well, please proceed to the Step 3 below.

sfc /scannow

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many perfd.dat error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

  1. Hit the Windows Start button
  2. In the search box, type "Update" and press "ENTER".
  3. In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
  4. If updates are available for download, click "Install Updates".
  5. After the update is completed, restart your PC.

If Windows Update failed to resolve the perfd.dat error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.



If Those Steps Fail: Download and Replace Your perfd.dat File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate perfd.dat file version. We maintain a comprehensive database of 100% malware-free perfd.dat files for every applicable version of Windows. Please follow the steps below to download and properly replace you file:

  1. Locate your Windows operating system version in the list of below "Download perfd.dat Files".
  2. Click the appropriate "Download Now" button and download your Windows file version.
  3. Copy the file into the appropriate directory for your Windows version:

  4. Windows Vista: C:\Windows\inf\PERFLIB\0000\
    Windows Vista: C:\Windows\inf\PERFLIB\0409\
    Windows 7: C:\Windows\inf\PERFLIB\0000\
    Windows 7: C:\Windows\inf\PERFLIB\0409\
    Windows 8: C:\Windows\inf\PERFLIB\0000\
    Show 5 more directories +
    Windows 8: C:\Windows\inf\PERFLIB\0409\
    Windows 8.1: C:\Windows\inf\PERFLIB\0000\
    Windows 8.1: C:\Windows\inf\PERFLIB\0409\
    Windows 10: C:\Windows\inf\PERFLIB\0000\
    Windows 10: C:\Windows\inf\PERFLIB\0409\
  5. Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 10.


GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve perfd.dat problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.



Download perfd.dat Files (Malware-Tested 100% Clean)


CAUTION : We strongly advise against downloading and copying perfd.dat to your appropriate Windows system directory. Microsoft typically does not release Windows DAT files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing perfd.dat and all other DAT files for Windows. An incorrectly installed DAT file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows 10
Windows Vista
Windows 8.1
Windows 8
Windows 7


Files Related to perfd.dat


DAT Files Related to perfd.dat

File Name Description Software Program (Version) File Size (bytes) File Location
counters.dat Game Data Windows 8.1 128 C:\Windows\System32\
ActivationStore.dat Game Data Windows 10 8192 C:\Users\Tester\AppData\Local\Microsoft\Windows\
TileCacheLogo-510562_1... Game Data Windows 8 364544 C:\Users\Tester\AppData\Local\Microsoft\OneDriv...
FNTCACHE.DAT Game Data Windows XP 90296 C:\Windows\System32\Sysprep\Panther\
perfh.dat Game Data Windows 7 291294 C:\Windows\schemas\EAPHost\

Other Files Related to perfd.dat

File Name Description Software Program (Version) File Size (bytes) File Location
WWAN_profile_v1.xsd XML Schema Definition Windows 8.1 6201 C:\Windows\L2Schemas\
WLANAP_profile_v1.xsd XML Schema Definition Windows 8.1 7548 C:\Windows\L2Schemas\
WLAN_policy_v1.xsd XML Schema Definition Windows 10 7627 C:\Windows\L2Schemas\
LAN_profile_v1.xsd XML Schema Definition Windows 8.1 2241 C:\Windows\L2Schemas\
LAN_profile_v1.xsd XML Schema Definition Windows XP 2241 C:\Windows\L2Schemas\


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