Looking for logging into the Duo Admin site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Duo Admin site. After that you can login as usual with your login credentials.
https://admin.duosecurity.com/login?next=%2F
https://duo.com/docs/administration
https://duo.com/docs/administration-admins
https://duo.com/docs/administration-users
https://duo.com/docs/adminapi
https://duo.com/docs/administration-settings
https://help.duo.com/s/article/3068
https://duosecurity.force.com/s/article/2301?nocache=https%3A%2F%2Fduosecurity.force.com%2Fs%2Farticle%2F2301%3Flanguage%3Den_US
https://docs.aviatrix.com/HowTos/AdminUsers_DuoAuth.html
https://kb.iu.edu/d/bfkp
https://support.google.com/a/answer/9002694?hl=ja
https://www.paloaltonetworks.com/documentation/80/pan-os/pan-os/authentication/configure-multi-factor-authentication/configure-mfa-between-duo-and-the-firewall
https://answers.splunk.com/answers/686589/why-does-enabling-duo-in-splunk-break-local-admin.html