What Is an ADP File?
A file with the ADP file extension is a Microsoft Access file format that holds project information. It communicates directly with a Microsoft SQL Server database, but doesn’t contain tables or queries like ACCDB files. While much less common, ADP files may instead be audio files used in some video games or videos downloaded from video streaming websites.
How to Open an ADP File
ADP files that are used with Microsoft Access can, of course, be opened with the program, too, but only if you’re running a version older than Access 2013; they also don’t work with SQL Server 2012 or newer. We’re not aware of a media player or other tool that can open ADP files that are ripped/copied from video game discs, nor do we have a download link for a compatible video player. Videos in this format are usually downloaded from browser add-ons like Video DownloadHelper for Firefox.
How to Convert an ADP File
Just as we don’t have any information on opening ADP audio or video files, we also don’t know of any tools to convert them to MP3s, MP4s, or any other audio/video format.
Still Can’t Open the File?
One big reason some files don’t open in programs we think they should work with is because we’re misreading the file extension. This is actually really easy to do because lots of file extensions share some of the same letters/numbers. For example, ADD looks an awful lot like ADP, but that file extension is used for Dynamic AX Developer Documentation files, something entirely unrelated to MS Access. ADE and APD are also easy to confuse for this file extension.
