When first starting QSoar in FireFox you are promoted to login, when in Internet Explorer you are not.

This is sometimes known as NTLM-SSO-enabled (NTLAM Single Sign On) Intranet.
See http://superuser.com/questions/664656/how-to-configure-firefox-for-ntlm-sso-single-sign-on
- In Firefox, type about:config In the address bar and press return.
- You'll get a warning - agree that you warranty is void!
- After the config page loads, in the filter box type: network.automatic. You should see a search result of network.automatic-ntlm-auth.trusted-uris
- Modify network.automatic-ntlm-auth.trusted-uris by double clicking the row and enter the relevant site
- Multiple sites can be added by comma delimiting them such as: http://your_other_sites, http://qsoarsitename
- Click OK. You may need to restart Firefox for changes to take effect.