[Solved] Zapier OAuth Integration Suddenly Failing with Bad Client_id

Hi @bennnjamin,

Sorry to hear you are having problems connecting to Zapier. I haven't seen that error before.

1. Can you please ensure that OAuth applications are enabled on your server (System Console > Integrations > Custom Integrations > Enable OAuth 2.0 Service Provider).
2. You mentioned you attempted to re-connect to the OAuth app in Zapier, can you also please attempt to delete and then re-create your OAuth app in Mattermost following these instructions, then connect to the new OAuth app in Zapier?