Anyone found an issue with ports?

[WITSMIKE]

HI First post and as typical an enquiry.

We are looking at Veeam Backup and Replication using the trial version of 3.1.
We seem to have come across an issue where VMware Centre Server Hung stopping all access (but maintining the servers uptime) and seemed to be pointing at either port 80 (HTTP) or 443 (HTTPS) as the culprit.
We uninstalled the trial version and then disabled the web frontpage via IIS.
This then allowed the Cente Server to run allowing us access again.

Has anyone come across any problem like this?
Or is there a thread which might shed some light in this issue?
Many thanks
Mike