COA file format description

Many people often share .coa files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .coa files. To address this issue, we have created this page to offer assistance and guidance on handling .coa files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .coa files.

Our aim is to simplify the process and promote seamless use of the .coa file format.

2 filename extension(s) found in our database.

.coa - Medlin Payroll Software Chart Data

The COA data files are related to Medlin Payroll Software. The COA file is a Medlin Payroll Software Chart Data. Medlin Payroll Software is a payroll preparation software application created by Medlin Accounting for the purpose of managing payroll for a large number of employees.

Application:Medlin Payroll Software
Category:Data files
Magic:- / -

Medlin Payroll Software Chart Data related extensions:

  • gapp Storyboard Embedded Engine Exported Data
  • ifs OS/2 Warp Installable Filesystem Data
  • znx RS ZND Vector Network Analyzer Data
  • ps Source Insight Symbol Defintions Data
  • hci HydroCAD IDF Curve
  • mte Noptel NOS Multi-target Data

.coa - Caligari TrueSpace COA Object

The COA document files are related to Caligari TrueSpace. The COA file is a Caligari TrueSpace COA Object. TrueSpace is a 3D modeler and animation software. The Caligari TrueSpace seems to be no longer supported.

Application:Caligari TrueSpace
Category:Document files
Magic:- / -

Caligari TrueSpace COA Object related extensions:

  • hsdt Hancom Office Hanshow Template
  • osgb OpenSceneGraph Binary Scene Data
  • bpt IBM InfoSphere Blueprint Director Document
  • sequ Adobe Acrobat Batch Sequence
  • cdsx ConceptDraw PROJECT XML SlideShow File
  • mlj Canon MultiPASS Suite Fax Document

Be careful.

It is important to understand that the .coa file extension is not limited to a particular set of applications. Other programs besides the intended ones can also use the .coa extension to create files. This includes potentially harmful programs or malware that may generate .coa files for various purposes. Be especially cautious with .coa files coming from untrusted or unknown sources.

Can't open a .coa file?

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

Select an app to open this .coa file

To set the .coa file association in Windows 11, you can follow these steps

  1. Open the Settings app by clicking on the Start menu and selecting the gear icon.
  2. In the Settings app, click on System and then select Apps from the left-hand side menu.
  3. Scroll down and click on the Default apps option.
  4. Under the Default apps section, you will find various categories such as Email, Web browser, and Music player.
  5. Locate the category that matches the file type you want to associate, such as Photos for image files or Video player for video files.
  6. Click on the current default app listed under the category. A list of available apps will appear.
  7. Choose the app you want to set as the default for that file type. If the desired app is not listed, click on More apps to see additional options or click on Look for an app in the Microsoft Store to search for apps in the Store.
  8. After selecting the app, it will become the default choice for opening files of that type.

It's worth mentioning that you don't always need to set .coa file association. Many applications can open .coa files without requiring any specific file association to be set.

The .coa file extension is often given incorrectly

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. Our goal in providing this list is to help users find the right information more easily and enhance their overall search experience on our website.

These misspellings were the most common in the past year:

ca, cao, cia, cka, cla, co, cow, cox, coz, cpa, oa, oca, soa, voa

Is it possible that the filename extension is misspelled?

There is a possibility that the .coa filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .coa:

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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If you find the information on this .coa page useful, please feel free to link to this page. >> COA file