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Basic information about ADR file

When there is a problem with opening files with the file extension ADR（*.ADR or *.adr）, you do not need a computer expert. In most cases, using the helpful suggestions of experts contained in our website as well as appropriate programs, you can solve the problem with the ADR file yourself.

There are 5 file types using the ADR file extension in our database. In the further part of this page, you will find detail information about all the ADR file with their brief description and a list of programs that support ADR file sorted by operating systems. The table below provides useful information about the ADR file extension. It answers questions such as:
  • What is the ADR file?
  • How to open a ADR file?
  • What programs do I need to open a ADR file?
  • What programs help to create and edit a ADR file?
  • How to convert ADR files to another file format?
  • How to convert another files to ADR file format?


1.Detail information about ADR file extension: Opera Bookmarks File

File type Opera Bookmarks File Category Web Files
Developer N/A File format N/A
Description ADR file is a Opera Bookmarks File. List of bookmarks created by the Opera Web browser.
Software programs that will open, edit or convert ADR files

Windows		 Opera

macOS		 Opera

Linux		 Opera


2.Detail information about ADR file extension: Address Book File

File type Address Book File Category Misc Files
Developer N/A File format N/A
Description ADR file is a Address Book File.
Software programs that will open, edit or convert ADR files

Windows		 Smart Address


3.Detail information about ADR file extension: After Dark Random Screen Saver Module

File type After Dark Random Screen Saver Module Category Video Files
Developer N/A File format N/A
Description ADR file is a After Dark Random Screen Saver Module.
Software programs that will open, edit or convert ADR files


4.Detail information about ADR file extension: Adress PLUS SQL Database File

File type Adress PLUS SQL Database File Category Misc Files
Developer N/A File format N/A
Description ADR file is a Adress PLUS SQL Database File.
Software programs that will open, edit or convert ADR files

Windows		 Adress PLUS SQL


5.Detail information about ADR file extension: Z-Tree Address Data

File type Z-Tree Address Data Category Misc Files
Developer N/A File format N/A
Description ADR file is a Z-Tree Address Data.
Software programs that will open, edit or convert ADR files

Windows		 z-Tree



Can't open a ADR file?

When you click a file to open it, operating system examines the filename extension. If operating system recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When operating system does not recognize a filename extension, you receive the following message:

”Can't open this file: example.ADR”。

To open this file, you install one of the applications from the list of software programs that you found here, you should be able to open, edit or convert the file with the ADR extension without any issue.


Where I can download the application that support ADR file?

If you do not know where you can download the application from our list, click on the link (which is the name of the program), you will find more information there on the location where to download the required application. Most often they are the websites of software manufacturers.


How to change file associations?

  • Right-click a file with the extension whose association you want to change, and then click "Open With".
  • In the "Open With" dialog box, click the program whith which you want the file to open, or click "Browse" to locate the program that you want.
  • Select the ”Always use the selected program to open this kind of file” check box.


Can I change the extension of ADR files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read/open the file. The problem is, changing the file extension does not change the file format. Select a software program from our list and install it on your computer. If the file has not opened correctly, you have to look for a different software program from our list. Sometimes you have to repeat the operation several times.


What else may cause problems width open a ADR file?

The reasons for the lack of the ability to open a ADR file on your computer may be at least several. The easiest thing is to find a suitable application installed on your computer, which will open a ADR file. If there is still something wrong, you might want to check:

  • Whether the ADR file is damaged.
  • Whether the ADR file is incorrectly linked in the registry entries.
  • Whether the ADR file extension has been accidentally removed from the Windows registry.
  • Whether the installation of an application that supports the ADR file format is incompletely.
  • Whether the ADR file is infected.
  • Whether the drivers of the equipment used for opening a ADR file are up to date.
  • Whether your computer has enough hardware resources to open a ADR file.

If the ADR file still not working with your software after eliminating the above shortcomings? That means that the problem is more complex and requires the help of a specialist.