Files that contain the .state file extension are most commonly used by the Windows Photo Gallery software application. This software allows a user to manage, edit and view digital photos and home videos.
The STATE files that are used by this software application contain the user information for the user who has registered the Windows Photo Gallery software license. The data contained in this file can include the user's id, license information and settings preferences.
The .state file suffix has also been known to be associated with an unknown Apple II file. These files are typically found on older Apple computers.
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If you have additional information about the STATE file format or software that uses files with the STATE suffix, please do get in touch - we would love hearing from you.