My company uses O365 SharePoint sites that I would like to be able to edit using SharePoint Designer 2013, however I am experiencing some problems making it work. I open SharePoint Designer 2013 and I go to Account and click on Add a service, then storage and select the option for Office 365 SharePoint. I am then asked for my email address, which I provide. The next screen asks for my password, which again I provide. Once that is done I see that 2 services are added, OneDrive - My company name and Sites - My company name. Both these entries state that to connect I'll need to provide my user name and password. So I click on the connect button and it brings up a sign in window, already populated with my email address as the user ID. When I enter the password and click Sign in it fails with a pop up error message saying "The username or password for Sites - My company name isn't correct. Please try again"
I know the password is correct, and I'm not the only user experiencing this exact same problem. Can anyone explain why this would be and how to fix it?