After setting up single-signon (SSO) on the Foglight Management Server (FMS), logging in fails and the FMS log shows:
Bad tag encountered
User logging in from the FMS host itself
It is not advisable to use a browser on the same box that is running VSJ. SSO with VSJ on localhost can be problematic, and is not recommended. Bad tag encountered: 78 error is expected in this case because browsers like IE will use NTLM authentication under such a scenario, resulting in the bad tag error.