Tips to open MHTML file

Can't open the MHTML file? You are not the only one. Thousands of users face similar problems every day. Below you will find tips on how to open MHTML files as well as a list of programs that support MHTML files.

MHTML file extension

File Name MIME HTML Format
File Category Web Files

The MHTML file is supported on 2 operating systems. Depending on your operating system, you may need different software to handle the MHTML files. Below is a summary of the number of programs that support and open the MHTML file on each system platform.

Operating systems
  • 6
  • 3
  • 0
  • 0
  • 0
  • 0

What is MHTML file?

The file in the MHTML format belongs to the Web Files category. In addition to this file, the Web Files category includes 303 related files. MIME HTML Format is most often found on 2 operating systems. The file will work on Mac OS, Windows systems, unfortunately not on others. The main program that supports this format is Mozilla Firefox. This was created by Mozilla. This file type can also be opened by 8 other programs. The Opera, Google Chrome, Microsoft Word, Microsoft Internet Explorer programs will also handle the file when the Mozilla Firefox program does not fulfill its role.

How to open MHTML file?

The main problem with MIME HTML Format is that the MHTML file is incorrectly associated with programs. This causes the file MHTML to open by system applications not designed for this purpose, or to display a message that there is no associated program. This problem can be easily remedied.

The first thing you should do is just "doubleclick" on the MHTML file icon you want to open. If the operating system has an appropriate application to support it and there is also an association between the file and the program, the file should be opened.

Step 1. Install Mozilla Firefox

An often overlooked issue is to make sure that Mozilla Firefox is installed on the computer. This can be achieved by typing Mozilla Firefox into the operating system search engine. If it is not, installation may solve the problem, as most applications create file associations during installation. Below you will find a list of applications that support MHTML files.

Step 2. Create association of Mozilla Firefox with MHTML files

However, it may happen that the application itself does not cause the MHTML file to open in the Mozilla Firefox application, but you can set it manually. The association can be created using the drop-down list available by right-clicking on the file and selecting Properties. The displayed window will contain information about the program that supports this type of file. Using the "Change" button we can set the program to handle this type. If there is no software on the list, simply select "Browse" and manually select the directory where the application is installed. Checking the "Always use the selected program ..." box will permanently associate the MHTML file with the Mozilla Firefox program.

Step 3. Update Mozilla Firefox to the latest version

If, however, after binding Mozilla Firefox with MIME HTML Format there were still problems, you should update the program to the latest version. Some applications allow you to update from the program level, and for others you need to download the installer from the Mozilla page and install.

Step 4. Check for the following problems with the MHTML file

Of course, it may happen that despite the above steps, the file still does not work. This could be due to the file itself, the cleanest issues are:

Very often, the file may be size 0 or incomplete. This suggests truncating the MHTML file contents when downloading or copying. The only repair option is to download the file again.
The operating system may be infected with a computer virus. A quick virus scan using an up-to-date antivirus program should clear up any doubts. Some antivirus vendors also provide free online scanners. However, it is important to scan the entire system, not only the file MHTML or the program directory. As a result of the scan, sometimes it is not possible to recover MHTML files, which are deleted if there is a backup of this file, then after restoring it, it must also be scanned.
Older version of MHTML file may not always be supported by the latest software version. On their websites, developers usually offer free solutions to such problems, e.g. in the form of a conversion program or an older version of the program.
There can be many reasons for this. Repairing is very dependent on the file type. Some programs offer the option of recovering data from damaged MHTML files. You can restore the file from a backup or use N/A help.
When reading, a message appears that the file was encrypted or corrupted. The encrypted MHTML files cannot be played on other computers than the one on which they were encrypted, they must be decrypted before using on another device.
The operating system protects files in some locations (e.g. the root of the system partition) against unauthorized access. The problem is only writing to the file, not reading it. Copying the MHTML file to another location will fix the problem.
This problem usually affects more complex files. In this case, the MHTML file is blocked by the first application to open it. Running programs (including those in the background) should be verified. Sometimes it is necessary to wait a while before referencing the MHTML file again. Antivirus programs or a backup being made may lock the file for a while without the user's knowledge. If the problem persists, restart the machine.