Download fastfat.sys to Fix Errors

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

fastfat.sys file Fast FAT File System Driver. 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 fastfat.sys related errors on your device. You can also download fastfat.sys file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows XP devices which will (most probably) allow you to solve the problem.

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

User popularity

3.1 Scanning for malicious software
3.2 System and driver update
3.3 System File Checker tool
3.4 System recovery

4 Download fastfat.sys

4.1 List of fastfat.sys file versions

File info

General information
Filename	fastfat.sys
File extension	SYS
Description	Fast FAT File System Driver

Software
Program	Microsoft® Windows® Operating System
Author	Microsoft Corporation

Details
MIME type	application/octet-stream
File type	Driver
System	Windows NT 32-bit
Copyrights	© Microsoft Corporation. All rights reserved.
Character set	Unicode
Language cod	English (U.S.)

Most common fastfat.sys file related problems

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

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

fastfat.sys

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

Problems related to fastfat.sys 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 fastfat.sys 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.

How to fix fastfat.sys errors in just few steps?

Remember, before taking any action related to system files perform a backup copy of your data!

fastfat.sys 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

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with fastfat.sys 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.

Installing relevant Microsoft Windows patches and updates may solve your problems related to fastfat.sys file. Use dedicated Windows tool to perform the update.

Go to the Windows "Start" menu
Type "Windows Update" in the search field
Choose the appropriate software program (name may vary depending on your system version)
Check if your system is up to date. If any unapplied updates are listed, install them immediately.
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 fastfat.sys 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 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 fastfat.sys file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the fastfat.sys file with properly working version. To use the tool:

Go to the Windows "Start" menu
Type "cmd" in the search field
Locate "Command Prompt" result – don't run it yet:
Click the right mouse button and select "Run as Administrator" option
Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Another approach is to restore system to previous state, before the fastfat.sys file error occured. In order to restore your system, follow the instructions below

Go to the Windows "Start" menu
Type "System Restore" in the search field
Start the system restore tool – it's name may differ depending on version of the system
The application will guide you through the process – read the messages carefully
After the process has finished, restart your computer.

If all the above-mentioned methods failed and the fastfat.sys 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 fastfat.sys file

The last solution is to manually download and replace fastfat.sys 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 fastfat.sys file.

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

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

If the steps did not solve your fastfat.sys 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 fastfat.sys

System Windows 10

File size 296352 bytes

Date 2017-03-18

Download

File details
	MD5	2b9436b78728463d89426ea8727f2bfd
	SHA1	beb743bd3068f82113a4044e624a8eb41bb9b44f
	SHA256	cb76d9b9aebeda7a5fa616e55f2b3f6afd576f4b2f5ef99b7409627d4493bf14
	CRC32	16275032
	Example file location	C:\Windows\System32\drivers\

Filename fastfat.sys

System Windows 8.1

File size 179552 bytes

Date 2013-08-22

Download

File details
	MD5	2b731e0cf73b392b1923078f464d96db
	SHA1	c644028da8cc4bb99c5584da546818d8a8e8ebf9
	SHA256	741ae561704a0ef464eb6184c3353188ad6150a5b10130df0e96d31ce821ad0c
	CRC32	f80601a9
	Example file location	C:\Windows\System32\drivers\

Filename fastfat.sys

System Windows 8

File size 168688 bytes

Date 2012-07-26

Download

File details
	MD5	c8b18803e1521225bdba86b5f7d2e9fc
	SHA1	832c34a9b9d1be2ca30500342bd04ae61ecc04fe
	SHA256	b28722e9ce8474e5a85219f65b4748eb154455db138ff428182b2f3fcdedc108
	CRC32	6f610b00
	Example file location	1: C:\Windows\System32\drivers\

Filename fastfat.sys

System Windows 7

File size 204800 bytes

Date 2009-07-13

Download

File details
	MD5	0adc83218b66a6db380c330836f3e36d
	SHA1	3a35eda743b5acc035fced1d0d3dbaf279670b92
	SHA256	798d6f83b5dbcc1656595e0a96cf12087fccbe19d1982890d0ce5f629b328b29
	CRC32	8fa36e9c
	Example file location	C:\Windows\System32\drivers\

Filename fastfat.sys

System Windows Vista

File size 198144 bytes

Date 2009-04-11

Download

File details
	MD5	1a4bee34277784619ddaf0422c0c6e23
	SHA1	cf36630b3614d61f7a7f2f8049ebc37138f2f429
	SHA256	3223e1b5dd4866d8e09f1b465ff82c911ddee5b01b084543086e47b11d2aea77
	CRC32	c03504ba
	Example file location	C:\Windows\System32\drivers\

Filename fastfat.sys

System Windows XP

File size 143744 bytes

Date 2008-04-14

Download

File details
	MD5	38d332a6d56af32635675f132548343e
	SHA1	74bba6eae61d7ce5a09b92ba922ae8de192b373d
	SHA256	e6909db836af679b4f4d62c7396d6c82769cc7abb8c919c2aabfe934fce268f6
	CRC32	f059ca40
	Example file location	---