Troubleshooting Problems Opening HDF Files
Common Problems Opening HDF Files
Help Development Kit Help File is Not Installed
When you double-click your HDF file, you may see a dialog box from your operating system stating that it "Cannot Open This File Type". If this is the case, it's usually due to the fact that you do not have Help Development Kit Help File for %%os%% installed on your computer. Because your operating system doesn't know what to do with this file, you won't be able to open it by double-clicking.
Tip: If you know of another program that can open your HDF file, you can try opening it by selecting the application from the programs listed.
Wrong Version of Help Development Kit Help File is Installed
In some cases, you might have a newer (or older) version of a Procomm Plus Alternate Download File Listing file that is unsupported by your installed application version. If you do not have the proper version Help Development Kit Help File (or any of the other programs listed above), you may need to try downloading a different version of it, or one of the other software applications listed above. This problem is most common when you have an older version of the software application, and your file was created by a newer version that it cannot recognize.
Tip: Sometimes you can get a clue about the version of HDF file you have by right clicking on the file, then clicking on "Properties" (Windows) or "Get Info" (Mac OSX).
Summary: In either case, the majority of problems opening HDF files are related to not having the correct software application installed on your computer.
Other Causes of HDF File Opening Problems
Although you might already have Help Development Kit Help File or another HDF-associated software installed on your computer, you can still encounter problems opening Procomm Plus Alternate Download File Listing files. If you are still having problems opening HDF files, there may be other issues that are preventing you from opening these files. These other problems include (listed in order from most to least common):
- Invalid HDF file references in the Windows Registry (the "phonebook" of the Windows Operating System)
- Accidental deletion of the description of the HDF file in the Windows registry
- Incomplete or bad installation of a software application associated with the HDF format
- Your HDF file is corrupted (issues with your Procomm Plus Alternate Download File Listing file itself)
- Your HDF is infected with malware
- Device drivers of the hardware associated with your HDF file are corrupt or out-of-date
- Your computer does not have the adequate system resources to open the Procomm Plus Alternate Download File Listing format
Quiz: What file extension is an audio file?
That's Correct!
AAC, or Advanced Audio Coding File format, is a lossy digital audio compression format. It achieves better sound quality than MP3 at the same bit rate.
Close, but not quite...
AAC, or Advanced Audio Coding File format, is a lossy digital audio compression format. It achieves better sound quality than MP3 at the same bit rate.