SBS 2008 - SBS Web applications will not start.

A few weeks ago OWA access broke on a clients SBS 2008 server.

If I go into IIS Manager I note that 'SBS Web Applications' is not started.  When I tried to start it I get the following message.

'This website cannot be started.  Another website may be using the port'

Is it possible this is caused by an ssl certificate problem?

Any advice on how to troubleshoot/resolve this problem will be appreciated.  

This is a SBS 2008 machine.
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Adam FarageSr. Enterprise ArchitectCommented:
Is there any other websites running? What happens if you run IISRESET /NOFORCE
The belive the 443 is used by some other web site.
May be default web site.
Change th eport on default web site start the SBS Web applications

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benfixitAuthor Commented:
Hi R-R - this has fixed the problem.. Thankyou!

Any thoughts on how 443 could of ended up assigned to Default Website?  It was not done by a human.
Cris HannaSr IT Support EngineerCommented:
Did you recently install new AV or other software on the server?
benfixitAuthor Commented:
Upgraded Trend Micro worry free, you think that would of done it??  I know it uses web services on some odd ports
benfixitAuthor Commented:
In IIS - removing 443 from default website and restarting pages fixed the problem.

thanks for your help!
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