---
title: "What causes the (0x80070520) [ConfigureBindings] Error"
canonical: "https://ai-docs.certero.com/space/CUP/119832898/What%20causes%20the%20(0x80070520)%20%5BConfigureBindings%5D%20Error"
format: markdown
---
---

## Introduction

During a Certero tenant upgrade, after multiple successful tasks there is a problem with the Configure website task. The error “A specified logon session does not exist. It may already have been terminated. ((0x80070520) [ConfigureBindings]” is shown.

![image](media://2b9cb102-181b-475a-af08-9e7d0750168c)

Don’t panic, the upgrade has been successful. Starting the Certero platform and Endpoint services will make the tenant accessible once again.

The cause of the error was the manual binding of a SSL certificate to the Assetstudio_<tenant-id> website within Internet Information Services (IIS) Manager. The matching of a Certero tenant to an SSL certificate should be done with Certero Provisioning and not separately in IIS.

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## Instructions

- Connect to the Certero Provisioning website (servername:9000).
- Choose tenants
- Against the appropriate tenant click
  (actions) and choose Configure.
- On the Website tab, under SSL Certificate select the CN (Common Name) of the certificate you want this tenant to use.

![image](media://a7435bfe-c3cd-450f-8b4a-621f5b12618f)

- Click Save and then Yes to the temporary loss of service warning.
- Ensure the task lists complete successfully.

![image](media://c5e25d77-e1e2-4304-bc66-82d4d06832f7)

N.B. Future tenant upgrade should complete without the error message.

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## For Awareness

Remember the following:

|  |  |
| --- | --- |
| Cererto Component Website | SSL Certificate |
| Provisioning (Certero Provisioning Services) | Manually BIND via IIS |
| Platform (AssetStudio_<tenant ID> | Provisioning (as described above) |
| Standalone Endpoint Server (Default Web Site – CerteroEndpointServer) | Manually BIND via IIS |