So I originally added "DOMAIN\Domain Admins" as a group with my privileged account in that group to SolarWinds NPM. I then removed that group and added specialized groups. One group has full admin rights, all drop downs are yes, and no limitations are in place. I have my privileged account in that group.
Now when I'm logged into NPM with that account I can no longer use my account to add new individual accounts or group accounts. I never got this error before. I was able to add any account using my privileged network account.
This has to be a bug..
I get this error and if I click the search AD button 5 times, my AD account gets locked out (I've logged out, cleared cache, used a different browser, rebooted the SolarWinds NPM Server, etc) --
"Cannot logon 'account@domain' via Interactive/Default"