Cannot Change Time Style Setting This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.
This article was previously published under Q168069 IMPORTANT: This article contains information about modifying the registry. Before you
modify the registry, make sure to back it up and make sure that you understand how to restore
the registry if a problem occurs. For information about how to back up, restore, and edit the
registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986 (http://support.microsoft.com/kb/256986/EN-US/) Description of the Microsoft Windows Registry
SYMPTOMS
When you attempt to change the Time Style setting on the Time tab in the
Regional Settings tool in Control Panel, you may receive the following
error message:
One or more of the characters that you typed in this field are invalid.
Try typing different characters.
CAUSE
This behavior can occur when the International registry key is missing or
damaged.
RESOLUTIONWARNING: If you use Registry Editor incorrectly, you may cause serious problems that may
require you to reinstall your operating system. Microsoft cannot guarantee that you can solve
problems that result from using Registry Editor incorrectly. Use Registry Editor at your own
risk. To work around this problem, use Registry Editor to delete the International key if it exists under the following registry key:
HKEY_CURRENT_USER\Control Panel
After removing the International key, re-create the International string
value, quit Registry Editor, and then restart the computer.
The international settings will be set to the default when you restart the computer, and you should then be able to change the time style setting.
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