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google-calendar-apigoogle-apis-explorer

Is Google Calendar V3 still supporting API Key Authentication?

I've been using Google Calendar API for several years for a project and suddenly I received the following error when requesting the list of holiday events:

(es.mexican#holiday@group.v.calendar.google.com): "Invalid Credentials".

According to the docs, it should be still be possible to authenticate with API Key but when testing it returns the same error. Am I missing something?

google-apis-explorer error

Solution

  • It seems to be a bug that affected many users in the last days

    I recommend you to give it a "star" to increase visibility and hope for prompt fixing.