.OPAL File Extension

Microsoft Office User Settings File

Developer Microsoft
2.8  |  9 Votes

What is an OPAL file?

Contains language specific resources used by the Office Customization Tool (OCT) to customize how Microsoft Office is installed; includes resources specific to a particular language like US English, German, Spanish, etc...

More Information

OCT allows users to customize the default settings that will be in Microsoft Office when it is installed. Examples of default settings would be default font size, autocorrect options, or file validation options.

OPAL files are used along with the language neutral .OPAX to create the custom installation in the form of an .MSP file.

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Programs that open or reference OPAL files

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