I've got a dedicated Win 2008 R2 box with Team Foundation Server. The site is bound at 8080 to a specific IP address and 443 https for external access to the same IP address. port 8080 is blocked to the outside world. The server has several IP addresses and multiple sites.
The cert is selected in the binding drop down box and everything works great for a while. I'm able to accept and install the certificate in the browsers that access it. The problem comes within 48 hours after binding setup. Outside clients lose the ability to connect. When I look in IIS the SSL Certificate in the binding modal popup indicates "Not Selected". As added information this cert is self signed.
I've looked all over the place and most posts have issues with the certs disappearing from the server level certificates. For me it is just the binding to this one site. I have 4 other sites on that server with their own IP addresses and certs (self signed as well) have no problem.
Things I've Done:
Looked through the event log for the application and security. Both clean.
Used different methods for creating the cert like makecert, selfssl, IIS itself.
Rebooted the server to see if the cert is lost on reboot. It is not.
Restarted IIS and the individual site to see if the cert is lost. It is not.
Recycled the pool for the site to see if the cert is lost. It is not.
Performed diff on applicationhost.config to see if anything changed. It has not.
The cert drops out usually within the first 48 hours but it seems random as to when it occurs and I can't tag it to any specific event that is causing it. Where do I look next?