Scan for .MHT File Extension Errors    |    What is the .MHT File Extension?    |    Repair .MHT File Errors

Run a Free Scan to check for MHT related errors.

What is the .MHT File Extension?

.MHT File Extension Description:

The .mht file extension is used by the Microsoft HTML message document, which is considered as an Archived Web Page. The file extension .mht is created when web pages are saved as web archives using MIME (Multipurpose Internet Mail Extension) HTML file format, with related links remapped, and the embedded contents incorporated into the .mht file.

There are no changes made to the absolute hyperlinks of the web page when a file with the .mht file extension is opened with Internet Explorer. The majority of web pages opened with a web browser contain only HTML and image references, along with links to media files that are stored within the server's directories, because everything is set in a single MHTML file.

The file extension .mht is produced when a user opts to save a web page into a single web archive document. MHTML format allows the sending and receiving of web pages and similar HTML based documents, via e-mail clients like Microsoft Outlook Express. The .mht file extension provides a way of embedding images directly in the e-mail messages body, instead of attaching the file to the message.

Files using the file extension .mht bind resources, with the key being the contents that are incorporated as part of an HTML email, with the use of MIME type related or multipart. The first part of the HTML document is encoded in a standard way with the succeeding parts treated as add-on resources that are identified using their URL. MHTML or .mht file extension format is a proposed standard circulated as RFC 2557 during the 1999 revised edition.

Beyond Internet Explorer, there is a variable support for .mht file extensions, due to the lack of standardization in saving of web pages implemented by different third party web browsers. This results in different rendering of web pages when opened by a web browser that is not similar to the one, which created the web page archive. No information is lost, only the actual display of the web page is affected.

Author: Microsoft Corporation
Author URL:
Related Applications: Internet Explorer
Common Path: C:/ Program Files/ Internet Explorer/


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

Do you have errors with .MHT files?

The Reason for .MHT files Errors:

.MHT files errors are possibly critical Windows file system errors and can be brought on due to a faulty registry entry that you should fix right away to avoid additional corruption in other software and/or devices. Dangers include device failure, blue screen errors and fatal crashes.

What are the Symptoms of .MHT files Errors?

.MHT files errors bring on many symptoms, including but not limited to: system hangs while shutting down or starting up, programs halt, reduced pc performance, built-in speaker beeps, trouble accessing documents, slow system behaviour and software installation trouble.

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

Repair .MHT File Errors    |    What is the .MHT File Extension?    |    Scan for .MHT File Extension Errors