Understanding PDX Issues
Troubles Opening PDX Files
Adobe Acrobat DC is Not Installed
When you double-click your PDX file, you may see a dialog box from your operating system stating that it "Cannot Open This File Type". Usually, this is because you do not have Adobe Acrobat DC for %%os%% installed. This will prevent you from double-clicking to open the PDX file because the OS doesn’t know how to handle it.
Tip: When you have another program installed that you know will open your PDX, you can select it from the other programs listed (see "Show Apps").
Outdated Adobe Acrobat DC
Sometimes your installed version of Adobe Acrobat DC won't support your Adobe Acrobat Index File file. Visit the Adobe Systems Incorporated website to download (or purchase) the latest version of Adobe Acrobat DC. Your Adobe Acrobat Index File file was probably created by a newer release of Adobe Acrobat DC than what's currently installed your computer.
Tip: If you right-click on your PDX file, then select "Properties" (Windows) or "Get Info" (Mac), you can obtain hints about what version you need.
Summary: Not having the right Adobe Acrobat DC version on your computer can cause problems opening PDX files.
Other PDX File Opening Causes
Although you might already have Adobe Acrobat DC or another PDX-associated software installed on your computer, you can still encounter problems opening Adobe Acrobat Index File files. Other PDX opening errors can be created by other system problems inside of %%os%%. Other contributing causes:
- PDX file references in the Windows Registry are broken
- Corruption of the PDX file description inside the Registry
- Invalid installation of a PDX-associated program (eg. Adobe Acrobat DC)
- Something has caused file corruption of your PDX
- Your PDX has adversely impacted by malware
- Hardware associated with PDX has outdated drivers
- Windows cannot load your Adobe Acrobat Index File file due to insufficient resources (eg. RAM)
Quiz: Which operating system pioneered hierarchical file system (eg. file folders)?
That's Correct!
Multics was the first OS to support hierarchies of directories (eg. "Home" -> "Documents" -> "Work"). Nearly every modern operating system was heavily influenced by Multics.
Close, but not quite...
Multics was the first OS to support hierarchies of directories (eg. "Home" -> "Documents" -> "Work"). Nearly every modern operating system was heavily influenced by Multics.