Tips to open PQO file

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

PQO file extension

File Name PhreeqcI
File Developer U.S. Geological Survey
File Category Misc Files

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

Operating systems
  • 1
  • 0
  • 0
  • 0
  • 0
  • 0

What is PQO file?

The file with the extension PQO is the Misc Files file type. It was designed by U.S. Geological Survey. Misc Files consists of 6033 similar files. PhreeqcI is supported by 1 operating systems. The file will work on Windows systems, unfortunately not on others. The main program that supports this format is PhreeqcI. This was created by U.S. Geological Survey.

How to open PQO file?

The main problem with PhreeqcI is that the PQO file is incorrectly associated with programs. This is manifested by the fact that PQO files open in unusual applications or do not have an assigned program. This problem can be easily remedied.

The first thing you should do is just "doubleclick" on the PQO 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 PhreeqcI

In this case, you should first verify that the PhreeqcI application is installed on the computer. The easiest method is to use the system search engine by entering the program name PhreeqcI in it. If it is not, installation may solve the problem, as most applications create file associations during installation. Later in this article you will find a list of programs that can open PQO files.

Programs to open PQO file

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

Step 2. Create association of PhreeqcI with PQO files

However, it may happen that the application itself does not cause the PQO file to open in the PhreeqcI 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. The "always use the selected program ..." field will set the PhreeqcI application as the default for handling the PQO file.

Step 3. Update PhreeqcI to the latest version

The fault may also lie with the PhreeqcI program, it is possible that PhreeqcI requires a newer version of the program. This can be done using the application (if it provides such options) or from the U.S. Geological Survey website and install the latest version.

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

The problem may also be with the file itself if the above steps don't 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 PQO file contents when downloading or copying. The file should be downloaded again, making sure that the process has finished correctly.
The most common cause here is computer viruses. A virus scan using an up-to-date antivirus program should fix the problem. Some antivirus vendors also provide free online scanners. However, it is important to scan the entire system, not only the file PQO or the program directory. As a result of the scan, sometimes it is not possible to recover PQO files, which are deleted if there is a backup of this file, then after restoring it, it must also be scanned.
A typical compatibility error - the program does not support the older version of the PQO file. 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 PQO files. The easiest way is to restore the file from a backup, if there is one, or contact U.S. Geological Survey
When reading, a message appears that the file was encrypted or corrupted. The encrypted PQO 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. While there is usually no problem reading such a file, it may not be possible to save it. Copying the PQO file to another location will fix the problem.
This problem usually affects more complex files. You may find that another program you are using is preventing you from working with the file. Closing other programs should help. Sometimes it is necessary to wait a while before referencing the PQO file again. Some anti-virus or backup software may occupy the PQO file for a certain period of time. If the problem persists, restart the machine.