The Four Best Ways to Open 4OU Files

The first way you should always try to open file extension 4OU is to double-click it, but when that doesn’t work, there are a few other things you can try. There are lots of programs that can open different file extensions, and there are some simple ways you can tell which one to use.

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Pick the Right Program

Start by choosing the right program to open your 4OU file. The most common program used to open 4OU files is listed below. At a minimum, this program should be able to open your 4OU file:

  • Binary Data

Note the File Type

Other programs may be able to open your 4OU file, depending on the type of file it is. You can find the file type listed in the file’s properties. On a Windows PC, right-click the file, click "Properties", then look under “Type of File.” On a Mac computer, right-click the file, click “More Info,” then look under “Kind”.

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Tip: If it’s the 4OU file extension, it probably falls under the Uncommon Files type, so any program used for Uncommon Files should open your 4OU file.

Ask the Developer

Contacting the software developer is another easy way to get help opening a 4OU file. You can find the developers for the most common programs used to open 4OU files in the list below.

Software Developer
Binary Data Microsoft Developer

Use a Universal File Viewer

When all else fails, a universal file viewer is the best way to open a 4OU file. Programs like File Magic (Download) can open many different types of files, depending on the format. Although, some files may not be compatible with these programs. If your 4OU file isn’t compatible, it will only open in binary format.


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