Most of the time if you first open the correct application, you can then use it to open a file that is of the correct format, even if the file type is not correctly associated with the extension. On the other hand if you click directly on the file and the file type is not associated with the correct application, it usually will not open - or at the very least will give you weird results when it opens up with the wrong application.
You can find out the file type by searching on http://filext.com/ and then you can see what programs you can use to open that file. Hope this helps.
Hkey_classes_root
There are many reasons that a file cannot be opened. The most common one is if you are trying to open a file of a certain type with the wrong kind of application. So for example, you cannot open a spreadsheet file with a graphics program. So it is important to open the file with the correct application and the correct version of that application.
File extensions are typically three letter abbreviations that identify the type of a file located at the end of the file name.The data files within Windows, for example, have application associated data (for example Music files should be playable by Media Player)- in other words if you have a music file and simply double clicking the music file doesn't launch the correct application; you would need to reinstall the music player application (say Windows Media player.)
The extension is actually immaterial. It merely serves to give the operating system a hint as to the file's content, allowing the file to be associated with a particular application, such as a GIF file viewer or an image editor application. In order to save a GIF file, you must first re-encode the image (assuming it is not already in GIF format), and save the output to a file with a GIF extension.
Ensure you have the correct version of the software to open the file. If you do not have the correct version, you can look on the Internet for various file converters that will convert the file format you have to the file format you need. When you have the correct software installed on your software, you can double-click on the file and it will open in the application. Or, you can open the application first and go to the menu option that lets you find and open files.
This is done by the programs that can open the file type in the designated format. for example a .AI file is opened by Adobe Illustrator because the Adobe Illustrator program sets a value in the computer to indicate it can open the .AI file, this is usually done automattically, but can also be done manually. the programs that can open file types have the file type listed as an "associated file type.
" Please find the attached file of your application letter for administration position " . It is grammatically correct however the contextually questionable.If you are sending an application filled by you then :"Please find the attached file of the application letter for the administration position "
There are good arguments both for and against disabling this option. If file extensions are not shown in explorer, renaming a file will not affect its extension. If an extension is accidentally removed, the file will not invoke the correct application and will not be useable until its extension is reinstated. If you cannot remember the correct file extension, you may not be able to reinstate the file. However, where you are trying to identify a file's extension, having them hidden can cause problems. The only indication of a file extension will be the icon displaying the application that it will be run under. Where you have several file types that run under the same application, it can be difficult to tell one from another without being able to see their file extensions.
A file with a .cfg extension is usually a configuration file. The file will be used by an application to load all the configuration settings. There is no standard format for a .cfg file and how it can be modified will differ from application to application.
.txt, or a text file can always be opened by an application.
.wk1 is a file extenstion that represents a spreadsheet file associated with Lotus 1-2-3, the first major spreadsheet application developed by Lotus Software - just as the file extention .xls would represent a Microsoft Excel spreadsheet file.