How to solve " One or more of the characters you typed in this field are invalid. Try typing different characters. " error in Windows XP

When you try to change the short or long date style settings in the Regional Settings tool in Control Panel, you may receive the following error message:

" One or more of the characters you typed in this field are invalid. Try typing different characters."

Solution :

To resolve this issue, add the following registry key and its associated string values, and then restart your computer:

HKEY_CURRENT_USER\Control Panel\International

iMeasure "1"

iNegCurr "0"

Locale "00000409"

sShortDate "MM/dd/yyyy"

sLongDate "MMMM dd,yyyy"

OR

Export the same registry key from any of the working machine and import it in to the PC which is having problem. Make sure you are importing it in to the correct registry node.