Signing into Zoom for PTS PTS has enabled Single-Sign-On, or SSO, for all Zoom users. Use this article to successfully access your PTS Zoom account. How to sign in with SSO Zoom web portal Go to your Zoom vanity URL; https://ptsem.zoom.us. Click Sign in.You will be redirected to your single sign-on provider to sign in. After signing in, you will be redirected back to the Zoom web portal. Zoom desktop client Click Sign In with SSO. Enter your company domain; https://ptsem.zoom.us. Click Continue.You will be redirected to your single sign-on provider to sign in. After signing in, you will be redirected back to the Zoom Desktop Client. Zoom mobile app Tap SSO. Enter your company domain; https://ptsem.zoom.us. Tap Continue.You will be redirected to your single sign-on provider to sign in. After signing in, you will be redirected back to the Zoom Mobile App.