A DPROJ file stores Delphi projects since 2007. You need Delphi software to open and edit these files.
Step 1. Install Delphi software to access DPROJ files.
DPROJ files contain Delphi project structure and details like source files and settings. Popular related formats are XML and BDSPROJ.
Not opening DPROJ files is often fixed by installing Delphi. Windows associates files with programs using the extension. If the extension is not recognized, no default program opens it.
First, install software supporting DPROJ. Second, associate the extension to Delphi in Windows Registry.
Many unknown file types contain only text. Check if DPROJ has errors. Read our guide to open DPROJ files now!