Over the last week we’ve been getting lots of intermittent 503 (server unavailable) and 504 (gateway timeout) errors from an SharePoint Online provider hosted app during the OAuth2AccessTokenRequest dance.
These only seem to last a few minutes – but they are causing problems.
Of course there is nothing indicating any problems on the service status dashboard but I take that with a pinch of salt as I’ve witnessed other problems with Office 365 that don’t seem to make it onto the dashboard.
Anyone else seeing the same?