This issue was resolved in vCenter Server 6.7.0b, build 8832884. For more information, see:
Patch for Windows VMware vCenter Server 6.7.0b.
Patch for VMware vCenter Server Appliance 6.7.0b.
This issue was resolved in vCenter Server 7.0, available atthe Broadcom support portal.
Workaround:
To work around this issue, change the SSO password to exclude the "/" character. For details on changing the SSO password, see How to unlock and reset SSO password in vSphere 6.x.
To collect a log bundle or review log files: