.BDR File Extension

File Type:
Exchange Non-Delivery Report Body File

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

What is a BDR file?

Bdr file extension has Exchange Non-Delivery Report Body file type, developed by Microsoft, which is associated with the "text files" category.

When Microsoft Exchange fails to deliver an e-mail, it creates a non-delivery report with detailed information why that message did not pass through. In a BDR file, you will find information about the message sender, recipient(s), and the error code. BDR files can be found in the Badmail directory along with .BDP and .BAD files.


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

bdr file icon
File Type:
Exchange Non-Delivery Report Body File
Text Files

How to open BDR file?

Double click the bdr 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 .bdr 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 bdr 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 bdr 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 BDR 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 bdr file as well. Download Universal File Viewer for your OS.

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