Overview

The file extension might be known in your Windows system since it is used as a computer icon. Found in the images kept on the Start menu, Desktop, and Windows, this file extension is Images can be stored in PNG and BMP formats.

Category

An ICO file is an image-holding file or image file that efficiently holds icons of Windows apps.

Supportive Apps

Any 32-bit OS versions but the version should be above Windows Vista

Company

The developer of the file extension is none other than the tech giant Microsoft.

MIME Type

It has various MIME types which are categorized.

Microsoft-

image/x-icon

IANA-

image/vnd. Microsoft. icon

Others-

image/icon

image/icon

application/ico

text/icon

File Signature

00 00 01 00

Location

It is saved in a different location for Windows 7 and 10.

For Windows 7-

• C:\Windows\system32\imageres.dll
• %windir%\explorer.exe

For Windows 10

• %systemroot%\system32\netshell.dll
• %systemroot%\system32\netcenter.dll
• %systemroot%\system32\imageres.dll
• %systemroot%\system32\networkexplorer.dll
• %systemroot%\system32\mmres.dll
• %systemroot%\system32\mmcndmgr.dll
• %systemroot%\system32\ddores.dll
• %systemroot%\system32\accessibilitycpl.dll
• %systemroot%\explorer.exe
• %systemroot%\system32\moricons.dll
• %systemroot%\system32\gameux.dll
• %systemroot%\system32\pifmgr.dll
• %systemroot%\system32\shell32.dll

Windows users can access ICO files using any free image programs.