I'm unable to rename any file in win XP,a message appears "If you change a file name extension,the file may become unusable" Plz help

I can help you with your WinXP file extension problem.

First you need to tell XP to show you the file extensions for all files (it hides them by default).

From any explorer window:

1. select Tools
2. then Folder Options
3. now choose the View tab
4. now scroll down to "Hide extensions for know files"
5. UN-check this box
6. select Apply, then OK

Go to control panel then go to folder option then click on view tab. On the list you'll find a option named "Hide extensions for known file type". Enable this option and click OK. Now you can rename your files easily.

Try to change the file name without changing the extension of the file name. Extension which is denoted by 3 letters followed by dot decide the type of the file.

This is a common issue.
Most people don't really know what a file extension is.
Every windows file has a three letter extension to let the OS know how to handle the file. Typically it looks something like this FILENAME.EXT where EXT is the extension.
To avoid this error message you have two options

One is to make sure when changing the file name you DO NOT highlight the extension
.
The other is to make sure you note the extension and include it after the new file name.

for example: a file called FILE001.ext MUST be renamed to NEWFILENAME.ext


Hope this helps
RJ

This happens when you are trying to rename a file and either don't add a file extension (such as .exe, .doc, .jpg, etc) or are changing the file type's extension from one to another.
The easiest way to avoid this is to only change the file name and not the extension, or turn off the option to view common file extensions.
Detailed instructions on how to disable the option to show all file extensions is listed below.
http://www.troublefixers.com/windows-on-file-rename-gives-warning-if-you-change-a-filename-extensionthe-file-may-become-unusable/