Use your Orion (SolarWinds) Admin account, that should work and check that your Orion server is selected in the address box.
If you are on the Orion server then localhost will work.
If you use an AD account, to access Orion, then domain\user and your password.
Sorted, thanks for that.
Do you have a screenshot? Have you upgraded recently?
are you running from server or a client machine.
using ad to login?