This means that changes have been made to your document template, even though you may have made no changes! This is most often caused by a mis-behaving Add-In.

Add-Ins are programs intended to supplement Word's built-in features or allow you to use a third-party program from within Word. The message you are seeing tells me that an Add-In probably made changes to your normal.dotm file without asking you about it first. The most common recent culprit is a blue-tooth Add-In.

Check to see which Add-Ins are installed by clicking two buttons on your Developer Tab, one for each type of Add-In. If there are any that you are sure you do not need, disable them. See if that helps. If not, go through and disable them all and see if that helps. If it does, you'll need to go through them one by one to find the culprit.

This and similar problems have come over the years from very reputable developers, including Adobe and Norton.

See Word Prompts Me to Save Changes to the Normal Template


http://office.microsoft.com/en-us/word-help/word-prompts-me-to-save-changes-to-the-normal-dot-template-HA001151452.aspx?redir=0

You may get advice on turning off this prompt. Unless you are both brave and foolhardy, you do not want to do that. It is like taking the batteries out of a smoke detector because it keeps warning you that there is a fire. You want to find the cause (or possibly replace the smoke detector).