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MissingMethodException error occurs when you open an OpenID Connect page in admin view

Found in

EPiServer.ContentDeliveryApi 3.6.0

Fixed in

EPiServer.ContentDeliveryApi 3.7.0

(Or a related package)


Feb 21, 2023


Apr 06, 2023


Closed, Fixed and tested


Fixed an issue that occurred when you upgraded the CMS packages to the latest version (12.17.0): the OpenID Connect (OIDC)-admin (EPiServer.OpenIDConnect.UI 3.6.0) stopped working. The UI for OIDC stopped working and generated an error message.

If you downgrade to an earlier version of the CMS packages, it works again.

Note: This issue didn't occur with released UI 12.16.1 & EPiServer.OpenIDConnect.UI 3.6.0.