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1File types that are unsupported can be opened in binary format.
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1st Method: Open it in another program.
When you double-click DDY files, your computer attempts to open it in a program associated with DDY files. If there’s no program associated with DDY files on your computer, the file won’t open. To open the file, download one of the most popular programs associated with DDY files such as ASHRAE Design Conditions Design Day Data.
2nd Method: Take a hint from the file type.
The DDY file extension usually indicates it's under the umbrella of Uncommon Files. However, if it’s another file type, it might not open with one of the programs listed above. Take the following steps to find the file type:
- Right-click the file.
- Click “Properties” (Windows) or “More Info” (Mac).
- Locate the file type under either “Type of File” (Windows) or “Kind” (Mac).
3rd Method: Check with the developer.
So you’ve tried using a different program, you’ve confirmed the file type, and your DDY file still won’t open. Even if these methods were unsuccessful, you might still be able to reach out to a software developer for help. Use the chart below to find the developer for each of the programs mentioned above and contact them directly for assistance.
| Software | Developed By |
|---|---|
| ASHRAE Design Conditions Design Day Data | American Society of Heating Refrigerating and Air-Conditioning Engineers Inc. |
4th Method: Open it in a universal file viewer.
If the developer isn’t able to help, a universal file viewer probably can. File Magic (Download) and similar programs are designed to open a wide variety of file formats, including DDY files. Some aren’t compatible and will only open in binary. Download File Magic now to open you DDY and hundreds of other file types with one program!
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