Outlook 2010-could not perform function; default mail client not properly installed-when trying to a



Can someone please help me with this? Outlook works perfectly when accessing it by clicking on the icon, but keeps giving an error messge: default mail client not properly installed-when trying to access from IE (64-bit), when I click on the envelope in IE. I have sent the default in Outlook 2010 and under Tools in IE. Thanks!!!

Sally Tang


Try to set the default mail client manually:


For Windows XP:

In Windows Explorer, choose View | Options. On the File Types tab, you'll need to edit the Open event for " URL:MailTo Protocol." as follows:

" C:\Program Files\Microsoft Office\Office\Outlook.exe" -c IPM.Note /m " %1"

For Windows Vista/Windows 7:

1. Open regedit.exe.

2. Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Clients\Mail\Microsoft Outlook\Protocols\mailto\shell\open\command

3. Change the value for Default as: " C:\Program Files\Microsoft Office\Office\Outlook.exe" -c IPM.Note /m " %1"

Note: I assumed that your Office program installed in C:\Program Files\Microsoft Office.

Sally Tang