File Extension 504
Determine which application is associated with .504 files.
You can click here to run a free scan for 504 related errors.
About the 504 file type:
If Windows cannot find the appropriate program associated with .504 files, then your registry may have errors. Check your Windows registry for errors (includes file association errors).504 is a file extension associated with file in Apple II
Windows cannot open 504 files?
When Windows cannot determine which application to use to open 504 files this can be caused because:
1. You do not have the appropriate program installed.
2. You may have a registry related error.
1. You do not have the appropriate program installed.
2. You may have a registry related error.
SOLUTION:
We strongly recommend that you run a free registry scan for related errors.File extension: .504
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