Hi David,
Apologies for the delay in getting back to you in this thread.
No, we wouldn’t expect that the same access_token would intermittently return a 401 error, that’s very strange indeed. Can I ask, are these requests all coming from the same hosts or are you making requests from several different servers? Is it possible one or more of the servers have a corrupt / invalid copy of the access_token?
Are you still seeing these problems today and, if so, could you please provide some further troubleshooting information using this post as a guide?
Thanks!
Dave J