Hey Albino,
This can be caused by a number of issues, depending on your answer to Paul's earlier question of clicking BI Launch Pad:
If you click BI Launch Pad button and it takes you directly to BI Launch Pad page prompting you to log in:
-User Specific: If this issue happens for only specific users, you can confirm if their contact record exists in the Central Management Console -> Users and Groups. If they do not exist here, add a new contact record and ensure that the username and password are an exact match to the username and password that user logs in to SDM with.
If you are taken to the BI LaunchPad page already logged in, it can relate to your IIS string/query length:
-Modify the maxQueryString to 3000 by opening up the web.config file on your servers from the following location:
NXRoot/bopcfg/wwwroot
and then look for the following and adjust it to 3000:
<security>
<requestFiltering>
<requestLimits maxQueryString="3000" maxUrl="3000" />
</requestFiltering>
</security>
Finally, just run an iisreset.
If none of these solve your issue, i'd recommend opening a support case, as BOXI issues sometimes require additional troubleshooting steps.
Regards,
Brandon Persad