Understanding CN_ Issues
Frequent CN_ Opening Issues
Microsoft Windows is Not Installed
You attempt to load your CN_ file and get an error such as "%%os%% Can't Open The CN_ File Extension". Generally, this is experienced in %%os%% because Microsoft Windows isn't installed on your PC. You won't be able to double-click to open your CN_ because your OS doesn't know what to do with it.
Tip: When another CN_ application is installed, you can choose to open it by selecting "Show Apps" and using that program.
Obsolete Version of Microsoft Windows
Sometimes your installed version of Microsoft Windows won't support your Compressed Windows Help Content file. Installing the latest version of Microsoft Windows from Microsoft Corporation is recommended. This problem is predominately due to having a Compressed Windows Help Content file version that was created by a newer version of Microsoft Windows than what you have installed on your PC.
Tip: Right-clicking on your CN_, then clicking "Properties" (Windows) or "Get Info" (Mac), can provide clues about your file version.
Primarily, problems experienced when opening CN_ files are due to having the incorrect version of Microsoft Windows installed on your computer.
Other Causes of CN_ File Opening Problems
Although you might already have Microsoft Windows or another CN_-associated software installed on your computer, you can still encounter problems opening Compressed Windows Help Content files. If you are continuing to have errors with loading CN_ files, other external issues might be to blame. Other contributing causes:
- CN_ file references in the Windows Registry are broken
- Unintentional removal of the description of the CN_ file inside the Windows Registry
- Invalid installation of a CN_-associated program (eg. Microsoft Windows)
- Something has caused file corruption of your CN_
- Malware-tainted CN_ file can't be opened
- Hardware associated with CN_ has outdated drivers
- Windows has inadequate resources to open your Compressed Windows Help Content file
Poll: What file extension do you use the most often?