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What is the OPUS File Extension?
As we mentioned, some programs have proprietary file extensions. You might have seen .doc, .exe, and .pdf at the end of a file name. Those are file extensions that indicate the file type and provide a clue as to which programs might be able to open a file.
Warning: Be sure that you trust the source that gave you the file, as you might be trying to open a file that contains malware. Always run your file through a malware checker before trying to open it.
Windows typically hides file extensions for known file types, which means that you shouldn't see the extension for most files. If you're unfamiliar with the file extension, right-click on it and click on "Properties". The "General" tab will reveal the filename and the extension suffix. You can now Google it to learn more about the file type.
Opening the OPUS File
Once you know the type of content the OPUS file contains (graphics, media, text), you can add the file extension to the default file associations in the computer's settings and try to open it again. If you don't have the matching software, you will have to download it.
If that still does not work, you may have to contact the developer for more guidance. For example, if you know that you have OPUS files, you will be able to Google to find out which software packages use the OPUS file extension.
If you have the software on your PC, but you still can't open the file, you may get in touch with the software developer of that file type. The most common OPUS-related software is Unknown Apple II File. If it's not included in the developer chart below, a quick web search of "Unknown Apple II File developer" can help you find the contact information of the developer that can help.
| Software | Developer |
|---|---|
| Unknown Apple II File | found on Golden Orchard Apple II CD Rom |
Open Your OPUS File With File Magic
Binary files often have to be opened in specific programs, but for everything else, you can use File Magic. Universal software viewers such as File Magic can open a variety of file types, depending on the format of the file. Download File Magic from the Microsoft Store now!
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