If you haven't yet started using Secure Online Storage at UMass Amherst, see Getting started with Secure Online Storage at UMass Amherst.
If you get a sharing request from someone at another institution, be sure you are logged into your Secure Online Storage at UMass Amherst account before accepting it, or you may be taken to that institution's login page. If needed, close the window that opened when you clicked the sharing request, log into your Secure Online Storage at UMass Amherst account, and then accept the sharing request.
When connecting to your Secure Online Storage at UMass Amherst account from any non-UMass Amherst login screen, enter your UMass Amherst email address and no password (any password you enter will be ignored). You will be redirected to log in with your UMass Amherst credentials. A few applications may not redirect you; these require you to enter an external password. Do not enter your UMass Amherst password on any non-UMass Amherst login screen.