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Basic information about COK file

When there is a problem with opening files with the file extension COK（*.COK or *.cok）, 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 COK file yourself.

There are 1 file types using the COK file extension in our database. In the further part of this page, you will find detail information about all the COK file with their brief description and a list of programs that support COK file sorted by operating systems. The table below provides useful information about the COK file extension. It answers questions such as:
  • What is the COK file?
  • How to open a COK file?
  • What programs do I need to open a COK file?
  • What programs help to create and edit a COK file?
  • How to convert COK files to another file format?
  • How to convert another files to COK file format?


1.Detail information about COK file extension: INet-Server Error Report

File type INet-Server Error Report Category Misc Files
Developer Teldas GmbH File format N/A
Description COK file is a INet-Server Error Report developed by Teldas GmbH. COK is a file extension commonly associated with INet-Server Error Report files. Teldas GmbH defined the INet-Server Error Report format standard. Files with COK extension may be used by programs distributed for Windows platform. INet-Server is by far the most used program for working with COK files. INet-Server software was developed by Teldas GmbH, and on its official website you may find more information about COK files or the INet-Server software program.
Software programs that will open, edit or convert COK files

Windows		 INet-Server



Can't open a COK 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.COK”。

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 COK extension without any issue.


Where I can download the application that support COK 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 COK 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 COK file?

The reasons for the lack of the ability to open a COK 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 COK file. If there is still something wrong, you might want to check:

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

If the COK 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.