.BAD File Extension

File Type:
Exchange Badmail File

Having trouble opening .bad extension? Don't panic! This page explains what bad files are as well as suggests programs you may use to open bad files. You can download these programs through this page.

What is a BAD file?

Bad file extension has Exchange Badmail file type, developed by Microsoft, which is associated with the "text files" category.

An e-mail message that Microsoft Exchange Server was unable to deliver. A BAD file holds information about the sender, recipients, subject, and text along with attachments. Basically, it is a copy of the original message. BAD files can be found in the Badmail directory along with .BDP and .BDR files.


To learn how you can open the given file, read the information below.

bad file icon
File Type:
Exchange Badmail File
Text Files

How to open BAD file?

Double click the bad file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .bad extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the bad extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the bad file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open BAD files

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the bad file as well. Download Universal File Viewer for your OS.

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