Fix cnvfat.dll Errors

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

cnvfat.dll file FAT File System Conversion Utility DLL. 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 cnvfat.dll related errors on your device. You can also download cnvfat.dll file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows 7, Windows Vista, Windows Vista, Windows XP 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 7, Windows Vista, Windows Vista, Windows XP

File info

General information
Filename cnvfat.dll
File extension DLL
Description FAT File System Conversion Utility DLL
Program Microsoft® Windows® Operating System
Author Microsoft Corporation
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.)

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

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



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


Problems related to cnvfat.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 cnvfat.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.

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

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

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

  • Windows 10: C:\Windows\System32\
  • Windows 8.1: C:\Windows\System32\
  • Windows 8: 1: C:\Windows\System32\
  • Windows 7: C:\Windows\SysWOW64\
  • Windows 7: C:\Windows\SysWOW64\
  • Windows Vista: ---
  • Windows Vista: ---
  • Windows XP: ---

If the steps did not solve your cnvfat.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 cnvfat.dll
System Windows 10
File size 34816 bytes
Date 2017-03-18
File details
MD5 cb9b469b713b142abd9b0ee2b18ba136
SHA1 6c1d7fe1242d72dbb980500a3a8f959126d45bb6
SHA256 d614e8128ad7083eb1cfe7dbb90914a2898f75fe3fbc0101ba26d16f9e447110
CRC32 b71c3dd5
Example file location C:\Windows\System32\
Filename cnvfat.dll
System Windows 8.1
File size 34816 bytes
Date 2014-11-21
File details
MD5 7e98132405181c8dbbec89e3031d5922
SHA1 fd55099b9843a0da247615007e5d7f6819db2846
SHA256 59a743202c68f9893a8911acfc44b734907cdbbd4c7cbe4643f396ca5a3f5660
CRC32 d219cd11
Example file location C:\Windows\System32\
Filename cnvfat.dll
System Windows 8
File size 33280 bytes
Date 2012-07-26
File details
MD5 1d628da4ac79203879378d83d58d5ecf
SHA1 01905ee6120e57b84417207704288735757de2f5
SHA256 d3da9a16df1f0398cf3e7db0f109f81d53f88facb9cda511688f879e4e8b1449
CRC32 bd184d64
Example file location 1: C:\Windows\System32\
Filename cnvfat.dll
System Windows 7
File size 32768 bytes
Date -0001-11-30
File details
MD5 190b06b700c09f57a506056605eb0b90
SHA1 bb75ae0bb2543ce78de5abe6d8338c12385914fc
SHA256 62a0c4510d592995155e2506404ee167d3ea72fe5012f4be2f250450a3cd505e
CRC32 d4aa2433
Example file location C:\Windows\SysWOW64\
Filename cnvfat.dll
System Windows 7
File size 38400 bytes
Date 2009-07-14
File details
MD5 536dac841b983ddc1539cf22a20e8f33
SHA1 0f4b63786ccbd23beb1c34e2b357070b48d7c8d3
SHA256 f80e9b7ff2c7ec1eefd35c6ed043fc6eb35841925eda9a6c6b6c583ff3b98fc8
CRC32 817dc45f
Example file location C:\Windows\SysWOW64\
Filename cnvfat.dll
System Windows Vista
File size 37376 bytes
Date 2006-11-02
File details
MD5 8506440c952787533c6a97f4ed09872c
SHA1 cddf99e9b80289a802e0ec7cc055c49377554304
SHA256 a270e2ff688471b1a929f93cc8fb7041d2f279400825d3fbec786c3647c93954
CRC32 8681e033
Example file location ---
Filename cnvfat.dll
System Windows Vista
File size 31232 bytes
Date -0001-11-30
File details
MD5 cadf54d0dffbf4413c739beff3bcbe57
SHA1 3983f169f645e719955ecbae7f93d0c4f5b496d3
SHA256 a52381b710c6451e9f5955187a706353b66d1ee2410ce75a26be79d2d0336c24
CRC32 c6b8d038
Example file location ---
Filename cnvfat.dll
System Windows XP
File size 26624 bytes
Date 2008-04-14
File details
MD5 aee886ce131b9367006531e28c6f497e
SHA1 aa47bb21f78f6485a173840b14f318b688a62991
SHA256 39c230e41d95d2fee77da16c7dfcef1d95bc4bce9fd4dcc0b73db355383f60f3
CRC32 01b4c5bd
Example file location ---