SecurityTokenSignatureKeyNotFoundException in OWIN OpenID Connect middleware connecting to Google
问题 We are using the generic OpenID Connect middleware to use Google as an external identity provider using IdentityServer3. We don't have MetadataAddress or any special TokenValidationParameters set up (so it should be getting the metadata based on Authority, and then filling in parameters based on that, which should be fine). We are getting the following error highly intermittently. Other questions I've come up with that have this error seem to involve incorrect custom validation and are not