Repair .DAT File Errors    |    Scan for .DAT File Extension Errors    |    How to Fix .DAT File Extension Errors

Run a Free Scan to check for DAT related errors.

What is the .DAT File Extension?

.DAT File Extension Description:

The DAT file extension represents simple and generic data created by an application software or operating system. It can refer to just about any type of file - graphics, text, binary data, and so on.

A large number of programs use the .dat file extension. There is neither a specific structure nor any exact way of interpreting the content of the DAT file.

Files with the .dat extension are application-specific. Usually, only the program that created the .dat file can read it. Opening .dat files using any text editor may display some information about it. It may show readable information about the file, though it won't be typically precise. Knowing the exact application that created the .dat file will allow the user to accurately read it.

Other than housing data, the .dat file may also be associated with a specific Windows configuration file, or with Microsoft Outlook E-mail attachment files and VCD video files.

Index.dat files are Windows-specific configuration files. These have a hidden index of the Web pages that are accessed along with the e-mails that are sent. These .dat files are not deleted, even when the temporary Internet files are cleaned out. Index.dat files generally provide a somewhat permanent log for the computer.

Microsoft Outlook uses a specific .dat file called Winmail.dat. It is attached to emails in Rich Text Format (RTF). These .dat files are only used when a recipient's client has no RTF support. Winmail.dat files are only utilized in MS Outlook, or the MS Exchange server is used to retrieve the mail.

The .dat file extension can also be the format for Video VCD files. These .dat files are video streams that are typically from a video compact disc (VCD). They usually have an MPEG-1 or MPEG-2 format and contain the actual video data to be played.

Author: n/a
Author URL: http://n/a
Related Applications: text editor:, MS Outlook:, media players
Common Path: n/a


Run a Free Scan to check for DAT related errors & to optimize PC performance.

Do you have errors with .DAT files?

What Causes .DAT files Errors?

A typical and frequent reason for .DAT files errors is corruption in the Windows program registry - repairs are required to prevent further damage in other applications and/or devices. Risks include hardware damage, blue screen errors and fatal operating system crashes.

Symptoms of .DAT files Errors:

.DAT files error symptoms include software freezes, start up or shut down troubles, jerky computer performance, sluggish behaviour, input halts, internal speaker beeps, problems opening documents as well as problems during software installation.

Helpful Tools

The following products are free to try. We have found them to be of the highest quality and value. They have been extremely useful in our own pc troubleshooting and maintainance and we highly recommend trying them out for yourself.

Anti-Malware Pro

With a lightning fast free scan and the largest authentic spyware detection database we have seen, Anti-Malware Pro finds and removes threats to your PC stability and security. Download Anti-Malware Pro


DriverFinder will scan your system for driver and software updates. Its easy to use interface makes keeping your drivers updated quick and simple. They will even send you an email notification when new driver updates are available for your system! It doesn't get any more convenient than this. Download DriverFinder

Browse File Extensions by Name:

Is your File Extension missing?

Help us to make the best resource we possibly can by submitting you very own file extension details. If you have detailed information on any file extensions please let us know by visiting the following link.

Submit File Details Form

How to Fix .DAT File Extension Errors    |    What is the .DAT File Extension?    |    Repair .DAT File Errors