A ICO is an icon file for Windows operating systems. These files contain small images, either one or more. These types of files have been around since Windows began. They first started as simple 32x32 pixels (Windows 1.0) and grew into 256x256 pixels (Windows Vista). Quite a transformation, right? The ICO file is similar to the .CUR file format. The .CUR file is simply a mouse cursor. The ICO file format is a lot like Mac’s .INCS file format as well. They are both files mainly used to store small icons, except on different operating systems.
In addition to the problem described above, i.e. the lack of the appropriate application to support the .ICO file, there may be several reasons that cause problems with opening and operation of the data format:
A quite common problem is the lack of application in the appropriate version. Even if you have an application, with the help of which you should open the .ICO file, you may have a problem with it because of its version. Perhaps in previous versions the application has not yet supported the .ICO file, so download the update and check again.
If you have already installed the appropriate application, and it is the correct version, the file may not open correctly, because the operating system does not have information that this program supports the file. So you need to "show" which program the computer should use. To do this:
It also happens that the file you want to open is corrupt and therefore there is no such possibility. In this situation, you should find its different version, or ask a person from whom you got, to send it again.
There may be several reasons why you cannot open the file with .ICO extension. Directly on this website you can find a solution of the most common problem with the .ICO file – that you do not have on your computer the appropriate program to open the file.