Consider the following scenario. You use Microsoft Outlook to create an e-mail message. You attach a Microsoft Word document to this e-mail message. Then, you send this e-mail message to yourself. In this scenario, when you open the Word document that is attached to the e-mail message, you are prompted to merge the changes from the attached document into the original version of the document.
This issue occurs if the Add properties to attachments to enable Reply with Changes check box is selected.
To work around this issue, use one of the following methods.
Method 1: Do not merge the Word documents
When you are prompted to merge the changes, click either No or No and don't ask again. When you close the Word document, save any changes that you made to the document. You will not be prompted to merge documents again.
Method 2: Clear the Add properties to attachments to enable Reply with Changes check box
Microsoft Office Outlook 2007
On the Tools menu, click Trust Center.
In the left pane, click Attachment Handling.
In the right pane, click to clear the Add properties to attachments to enable Reply with Changes check box under Reply with changes, and then click OK.
Microsoft Office Outlook 2003 or Microsoft Outlook 2002
On the Tools menu, click Options.
Click E-mail Options.
Click Advanced E-mail Options.
Click to clear the Add properties to attachments to enable Reply with Changes check box, and then click OK.
Click OK two times.
Method 3: Use the Send To menu command to send the document
Right-click the Word document on the computer, point to Send To, and then click Mail Recipient.
Type your e-mail address in the To box, type a subject line in the Subject box, and then click Send.