Yesterday I was reading the SharePoint Designer 2010 section of the MVP Real World SharePoint  2010 book. There was this great tip explaining how to login as a different user with SharePoint Designer 2010.

The issue is that the functionality is pretty hidden away!

To login as a different user do the following:-

• Open SharePoint Designer 2010
• If you look down on the bottom left hand side you will see an icon that looks like this:

• Click on this icon
• A message will appear saying “You are logged in as DOMAIN\username, Click OK to close all items and login as someone else.”
• Click OK and you will be prompted for a username and password