I recently installed MS Office 2010 on my computer. I have windows 7 64bit on it as well. When I login, it gives an error message stating: Either there is no default mail client or the current mail client cannot fulfill the messaging request. I've tried the regedit fix by deleting HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Clients\Mail\Microsoft Outlook and repairing Office after deleting. I also tried setting as default from control panel but it did not work. Deleting the MSMAPI\1033 did not work either. I still get the message when I log off and log back in. Is there anything that can help me fix this from not popping up when I log in?