ADP File Extension
Access Project
- File Type adp
- Developer Microsoft
- Popularity
- Application Microsoft Access
- Category Document Files, Blocked Email Attachment Files
What is a ADP file?
Files with the ADP extension are associated with Access Project and are categorized as Document Files and Blocked Email Attachment Files, making up 1045 files.
The Access Project (ADP), created by Microsoft, is one of file format they developed, and they also built 242 programs to support them.
ADP files are supported by Windows. When working with ADP files, you can rely on 2 programs, including Microsoft Access and Microsoft Office.
How to open a ADP file?
If you can’t open a ADP file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.
Microsoft Access and Microsoft Office stand out as the preferred programs to manage ADP files effectively. To get the latest version of Microsoft Access, open the Microsoft website where a universal installer for all operating systems is available.
When you finish installing Microsoft Access, the system will automatically launch ADP files with it.
Set Microsoft Access to open ADP by default
Change default apps on Mac
- Right-click or use Control + Left-click on the desired ADP file to access the file’s context menu;
- Choose "Open in Application" and click "Other";
- At the bottom of the window, you will see the "Enable" menu. It is already set to the default option, "Recommended Programs";
- Within this menu, select "All Programs" and then search for Microsoft Access. Check the box next to "Always open in app" to make it the default program.
Set default programs for Windows
- Take the first step by right-clicking on your ADP file. Next, select "Open With" and then choose "Choose another app" from the available options;
- Find the Microsoft Access application in the pop-up window and select it as your preferred program;
- Select the "Always use this application" check box and click "OK" to save your selection as the default application for opening ADP files.
Convert files to and from ADP
If a ADP file is difficult to handle, you might try converting it to formats such as MDB, ACCDB, ACCDP or similar, which may be easier to work with.
Be aware that converting a ADP file may reduce some features, but you can usually revert it to the original format.
Convert ADP to other file formats
Easy ADP Troubleshooting
When facing challenges with ADP files, simple adjustments in your software can often solve the problem. Find helpful troubleshooting guidance below.
How do I know if my ADP file has been damaged?
ADP document files that have become corrupted may display one or more of the following symptoms:
- Error alerts occur when actions are performed on the file;
- The file exhibits poor performance during editing operations in Microsoft Access;
- When opening the file, errors occur or the inability to access its contents;
- Unexplained ADP file size inflation;
- Microsoft Access or other programs stop responding or crash when trying to handle the file;
Why does Microsoft Access quit or crash unexpectedly?
Lack of software updates is a possible reason behind Microsoft Access crash. Keep your Microsoft products up to date by installing the latest updates.
Restarting your computer is often an effective solution to resolve various common problems. Therefore, it is recommended to do so before making any changes to the software configuration.
What methods can be used to repair a damaged ADP file?
In a data recovery program, open the damaged ADP file and select the "Repair" menu option. Allow the recovery process to complete, which will automatically repair the damaged document files.
How to edit a ADP file?
To make changes to ADP files, you need specialized software that allows both opening and editing the document files. Online ADP editors offer fewer capabilities than applications optimized for Access Project.
Best ADP Editor Software in 2026
After analyzing the criteria, we have created a list of ADP editors available for use.
| ADP Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Microsoft Access | Microsoft | Windows | 4.4 out of 5 (34 reviews) |