We were setting up a test site for our Application Request Routing rule set prior to running things in production and hit this:
Edit Site Binding
There was an error while performing this operation.
A specified logon session does not exist. It may already have been terminated. (Exception from HRESULT: 0x80070520)
Okay, that was right out in left field.
Fortunately search results were right on:
The solution was to delete the certificate and then import it again but this time leaving the Allow this certificate to be exported checked.
Once we did that our site went up with no issues.
Co-Author: SBS 2008 Blueprint Book
Chef de partie in the SMBKitchen
Find out more at
Third Tier: Enterprise Solutions for Small Business