Access Denied or Unauthorized error is thrown after upgrading to v2.5.16 MicroGateway

[#1]

Same ApiKey being used but after MG upgrade, even after giving valid apikey access_denied error is thrown.

what is the config that needs to be validated to address the issue?

MG v2.5.16 upgrade resulted in the access denied, eventhough no update has been made in the product or dev apps.

However the MG instance being switched to the new nodes.

[Former Community Member]

you might want to look at the gracePeriod option in OAuth. There might be a timing issue between the MG server and the Edge server (see details here: https://docs.apigee.com/api-platform/microgateway/2.5.x/operation-and-configuration-reference-edge-m...