New
#21
Certainly is an odd one -- repair install an option?
IDK whether this will work but give it a shot.
Click Start button, in the Search box or Run box type: GPEDIT.MSC
That will bring up the Group Policy Object editor.
Navigate to User Configuration > Administrative Templates > Windows Components > Attachment Manager. ENABLE the policy called "Do not preserve zone information in file attachments".
Close the GP editor, then logoff and logon to your computer.
This may sound odd, but how about, creating another admin account and turning off UAC in it and check the issue.