COL File Extension

What is COL file?

COL is a file extension commonly associated with Capture One Session Format files. Phase One defined the Capture One Session Format format standard. Files with COL extension may be used by programs distributed for , Mac OS, Windows platform. COL file format, along with 1326 other file formats, belongs to the Data Files category. The most popular program for handling COL files is Phase One Capture One, but users can choose among 3 different programs that support this file format.

Programs which support COL file extension

Below you will find an index of software programs that can be used to open COL files divided into 3 categories according to system platform supported. Files with COL suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

How to open file with COL extension?

Problems with accessing COL may be due to various reasons. Fortunately, most common problems with COL files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. We have prepared a listing of which will help you resolve your problems with COL files.

Step 1. Install Phase One Capture One software

The most common reason for such problems is the lack of proper applications that supports COL files installed on the system. This issue can be addressed by downloading and installing Phase One Capture One or different compatible program, such as AutoCAD, Autodesk Animator. The full list of programs grouped by operating systems can be found above. The safest method of downloading Phase One Capture One installed is by going to developer’s website () and downloading the software using provided links.

Step 2. Update Phase One Capture One to the latest version

If the problems with opening COL files still occur even after installing Phase One Capture One, it is possible that you have an outdated version of the software. Check the developer’s website whether a newer version of Phase One Capture One is available. Software developers may implement support for more modern file formats in updated versions of their products. If you have an older version of Phase One Capture One installed, it may not support COL format. The latest version of Phase One Capture One should support all file formats that where compatible with older versions of the software.

Step 3. Assign Phase One Capture One to COL files

If the issue has not been solved in the previous step, you should associate COL files with latest version of Phase One Capture One you have installed on your device. The process of associating file formats with default application may differ in details depending on platform, but the basic procedure is very similar.

Change the default application in Windows

• Clicking the COL with right mouse button will bring a menu from which you should select the Open with option
• Click Choose another app and then select More apps option
• To finalize the process, select Look for another app on this PC entry and using the file explorer select the Phase One Capture One installation folder. Confirm by checking Always use this app to open COL files box and clicking OK button.

Change the default application in Mac OS

• By clicking right mouse button on the selected COL file open the file menu and choose Information
• Open the Open with section by clicking its name
• Select Phase One Capture One and click Change for all...
• Finally, a This change will be applied to all files with COL extension message should pop-up. Click Continue button in order to confirm your choice.

Step 4. Ensure that the COL file is complete and free of errors

Should the problem still occur after following steps 1-3, check if the COL file is valid. It is probable that the file is corrupted and thus cannot be accessed.

1. The COL may be infected with malware – make sure to scan it with an antivirus tool.

Should it happed that the COL is infected with a virus, this may be that cause that prevents you from accessing it. Scan the COL file as well as your computer for malware or viruses. COL file is infected with malware? Follow the steps suggested by your antivirus software.

2. Ensure the file with COL extension is complete and error-free

If the COL file was sent to you by someone else, ask this person to resend the file to you. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. If the COL file has been downloaded from the internet only partially, try to redownload it.

3. Ensure that you have appropriate access rights

Some files require elevated access rights to open them. Log in using an administrative account and see If this solves the problem.

4. Check whether your system can handle Phase One Capture One

If the system is under havy load, it may not be able to handle the program that you use to open files with COL extension. In this case close the other applications.

5. Ensure that you have the latest drivers and system updates and patches installed

Up-to-date system and drivers not only makes your computer more secure, but also may solve problems with Capture One Session Format file. It may be the case that the COL files work properly with updated software that addresses some system bugs.

Do you want to help?

If you have additional information about the COL file, we will be grateful if you share it with our users. To do this, use the form here and send us your information on COL file.