With Strategy 10.4 multi tabbed browsing is supported across multiple different projects as described in KB310791: Multi-tab Browsing is now supported in MicroStrategy Web 10.4.
With Strategy Web 10.7 and 10.4 Hotfix 3, support of multi-tabbed browsing is further extended to Single Sign On authentication modes. In order to enable support of multiple simultaneous project sessions for Trusted authentication, Windows authentication and Kerberos Integrated authentication it is required to make the following change:
1. Open the file sys_defaults.xml from [Web deployment folder]/WEB-INF/xml
2. Change the value of the setting "whether to enable multiple projects sessions with Single Sign On" from 0 to 1.
<pr des="whether to enable multiple projects sessions with Single Sign On" n="enableMultiProjectsSessionsWithSSO" scp="system" v="0" dt="boolean"/>
