Tips to open DAO file

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

DAO file extension

File Name Disk At Once CD/DVD Image
File Category Disk Image Files

The DAO file is supported on 1 operating systems. Depending on your operating system, you may need different software to handle the DAO files. Below is a summary of the number of programs that support and open the DAO file on each system platform.

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

What is DAO file?

The file in the DAO format belongs to the Disk Image Files category. Disk Image Files consists of 203 similar files. Disk At Once CD/DVD Image appears on 1 operating systems as a functional file. These systems consist of Windows, although it may occasionally be found on another system, it will be non-functional. It is recommended to use IsoBuster to handle this file. This is a program created by Smart Projects. There are also 2 alternative programs to handle the DAO file. UltraISO, MagicISO will apply when it is not possible to use IsoBuster.

How to open DAO file?

The main problem with Disk At Once CD/DVD Image is that the DAO file is incorrectly associated with programs. This causes the file DAO 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 DAO 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 IsoBuster

The first step is to check if the computer has the IsoBuster program installed. This can be achieved by typing IsoBuster into the operating system search engine. In the absence of an appropriate program, its installation in the vast majority of cases will fix the problem. Later in this article you will find a list of programs that can open DAO files.

Programs to open DAO file

Remember to download programs supporting DAO files only from verified and safe sources. We suggest using the websites of software developers.

Step 2. Create association of IsoBuster with DAO files

If the application is or has been freshly installed, but the DAO file still does not use the IsoBuster program, it means no association. This option is available from the level of Properties of a specific file available in the context menu. The displayed window will contain information about the program that supports this type of file. Changes can be made using the "Change" button. If there is no software on the list, simply select "Browse" and manually select the directory where the application is installed. However, it is important to check the "Always use the selected program ..." box, this will allow you to permanently associate the DAO file with the IsoBuster application.

Step 3. Update IsoBuster to the latest version

If, however, after binding IsoBuster with Disk At Once CD/DVD Image 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 Smart Projects page and install.

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

Of course, it may happen that despite the above steps, the file still does not work. File problems can be divided into the following:

The DAO file may be unusually small compared to the original file. Usually this applies to DAO files downloaded from the Internet in case the download did not finish properly. Downloading the file again should fix the problem.
The operating system may be infected with a computer virus. Perform a virus scan using available and up-to-date anti-virus software. If this is not possible, you can use the online scanner. The scan should cover the entire computer, not only the DAO file that we want to open. As a result of the scan, sometimes it is not possible to recover DAO files, which are deleted if there is a backup of this file, then after restoring it, it must also be scanned.
This can happen especially when the program is dynamically developed and the structure of the DAO files changes over time. These problems are known and are often very easy to fix using the software developers's website.
The file may be corrupted in a number of ways. Repairing is very dependent on the file type. Some programs offer the option of recovering data from damaged DAO files. The easiest way is to restore the file from a backup, if there is one, or contact N/A
When reading, a message appears that the file was encrypted or corrupted. The encrypted file DAO except for the special designation, works normally, but only on the device where it was encrypted, before transferring it to another machine, decryption is required.
Some operating systems do not allow file operations in certain locations, eg in system directories or directly on the system drive. The problem is only writing to the file, not reading it. Copying the DAO file to another location will fix the problem.
This can happen on a file that does not support multiple access. In this case, the DAO file is blocked by the first application to open it. Just close unnecessary programs. Sometimes you have to wait for the session to the file DAO to close. Some anti-virus or backup software may occupy the DAO file for a certain period of time. If this does not work either, restart the device.