Open Outlook
Go to File
Select Options
Click Mail
Select Signatures
Choose the signature you want to edit
Make your changes in the editor
Click Save or OK
Set the edited signature as default if needed
Close the settings window
Open Outlook
Go to File
Select Options
Click Mail
Select Signatures
Choose the signature you want to edit
Make your changes in the editor
Click Save or OK
Set the edited signature as default if needed
Close the settings window