IIS Error: There was an error while performing this operation. A specified logon session does not exist. 0x80070520

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.

Details:

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:

• freakcode: IIS7 Certificate binding issue

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.

Philip Elder
Microsoft MVP
MPECS Inc.
Co-Author: SBS 2008 Blueprint Book

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