Sorts of D4 Files

Principal D4 Type

.D4

File Ext:	.d4
Classification:	Dataphor Source File

A D4 file is a source file associated with the Dataphor application development platform.

Company:	Open Source
Kind:	Developer Files
Entry:	HKEY_CLASSES_ROOT\.d4

Software Programs That Open The Dataphor Source File:

Dataphor by Open Source

Windows

Optional Offer for FileViewPro by Solvusoft | EULA | Privacy Policy | Terms | Uninstall

Troubleshoot D4 Files

Issues Opening D4 Files

Missing Dataphor

Double-clicking your D4 file prompts the message "%%os%% Can't Open D4 File". Usually, this is because you do not have Dataphor for %%os%% installed. Your operating system cannot associate your D4 with Dataphor, so double-clicking the file won't work.

Tip: If you know of another program that can open your D4 file, you can try opening it by selecting the application from the programs listed.

Wrong Version of Dataphor is Installed

In some cases, you might have a newer (or older) version of a Dataphor Source File file that is unsupported by your installed application version. Visit the Open Source website to download (or purchase) the latest version of Dataphor. The primary cause of this problem is that your Dataphor Source File file was created by a different (newer) version of Dataphor than what's installed.

Tip: Investigate your D4 file by right-clicking and selecting "Properties" to find clues on what version you need.

Primarily, problems experienced when opening D4 files are due to having the incorrect version of Dataphor installed on your computer.

Other Causes of D4 File Opening Problems

Assuming you have the right Dataphor version installed, other problems can prevent you from opening D4 files. Other D4 opening errors can be created by other system problems inside of %%os%%. Issues that aren't software-related:

• Corrupt Windows Registry file path references for D4
• Accidental deletion of the description of the D4 file in the Windows registry
• Incomplete or bad installation of a software application associated with the D4 format
• File corruption affecting your D4 file
• Past or present virus infection has affected your D4
• D4-related hardware has device drivers that obsolete
• Too many applications are open on your PC to load your Dataphor Source File file successfully