query on impact after renewal of certificate

[Rod Widdowson]

> I am using the Website's certificate for Shibboleth.  

That was a mistake and the problems you now have are a result of that.

Generate a long life self signed certificate for Shibboleth (there is a tool in the SP toolbox to do it I just have the documentation to hand) and roll that in as per the link that Cart sent..  

Then you'll not need to worry about every time your website needs changed.