How to Repair MSTTSLocEnUS.dat? Download Now

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

MSTTSLocEnUS.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 MSTTSLocEnUS.dat related errors on your device. You can also download MSTTSLocEnUS.dat file compatible with Windows 10, Windows 10, Windows 8, Windows 8.1 devices which will (most probably) allow you to solve the problem.

For Windows Compatible with: Windows 10, Windows 10, Windows 8, Windows 8.1

File info

General information
Filename MSTTSLocEnUS.dat
File extension DAT
Type Dynamic Link Library
Description Game Data
Program Windows 10
Software Windows
Author Microsoft
Software version 10
File size 8835552
Oldest file 2012-06-02
Latest file 2017-03-18

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

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



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


Problems related to MSTTSLocEnUS.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 MSTTSLocEnUS.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.

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

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

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

  • Windows 10: C:\Windows\Speech_OneCore\Engines\TTS\en-US\
  • Windows 10: C:\Windows\Speech_OneCore\Engines\TTS\en-US\
  • Windows 8: 1: C:\Windows\Speech\Engines\TTS\en-US\
  • Windows 8.1: ---

If the steps did not solve your MSTTSLocEnUS.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 MSTTSLocEnUS.dat
System Windows 10
File size 9258072 bytes
Date 2013-07-24
File details
MD5 2d7d9973f6ce38d87dbe545e0dabd7b0
SHA1 1dc54fc57aceb54175a1ad87a2a886c557da814f
SHA256 21daa790461300128dd98343930ea0cb213aa4d35ad3511e2f448edc93e8c9d4
CRC32 c4884bf2
Example file location C:\Windows\Speech_OneCore\Engines\TTS\en-US\
Filename MSTTSLocEnUS.dat
System Windows 10
File size 8835552 bytes
Date -0001-11-30
File details
MD5 7e317aaf08a755a1fca3b9745c043cbc
SHA1 86396ba47bcb41ec466095114c3395727f14b85c
SHA256 b9c49a3233925f10b990dba9f2bccca82da438fa15827c33ed6cea5a70a7cb2f
CRC32 b2fb64ec
Example file location C:\Windows\Speech_OneCore\Engines\TTS\en-US\
Filename MSTTSLocEnUS.dat
System Windows 8
File size 5879808 bytes
Date 2012-06-02
File details
MD5 7d0067bd9490988832f6c4a7a231f19e
SHA1 e7066a38855466db0e0d5f9900d3acb0f64de58c
SHA256 4b31283b43ddf56ec0ccb52cef94d132a4f24ad8a98f80f9103d6313c8c02f1d
CRC32 e79c590f
Example file location 1: C:\Windows\Speech\Engines\TTS\en-US\
Filename MSTTSLocEnUS.dat
System Windows 8.1
File size 9258072 bytes
Date 2013-07-24
File details
MD5 2d7d9973f6ce38d87dbe545e0dabd7b0
SHA1 1dc54fc57aceb54175a1ad87a2a886c557da814f
SHA256 21daa790461300128dd98343930ea0cb213aa4d35ad3511e2f448edc93e8c9d4
CRC32 c4884bf2
Example file location ---