muellerm

It had hours to propagate if that was the issue. I also moved the WHD install to another server (same SQL database connection) with the same version installed 12.7.7 and I tested things. Same error that is the subject of this post. Upgraded to 12.7.9 and it immediately worked. I didn't even need to click the "authorize"…

But, the one that didn't work is the first one we tried to get working. It's our most used WHD instance. After spending 5 hours on that, we gave up and moved on to the other one. Which worked immediately. So the two separately registered applications didn't exist when we were starting all this. Just the one did.

The password on the account used is set to not expire, but I changed the password anyway just to be sure it wasn't this sort of issue. That had no effect. We have two separate registered applications since they each have different DNS entries.

I'm so happy for your post. We put our two WHD processing emails into an exception to use basic authentication and now everything is working again! Thank you!

Is this the error you were getting? "Error processing mailbox messages: The remote server returned an error: (401)Unauthorized" We are getting this error and I'm trying to resolve it.

Changing the timeout to 180 has caused ticket replies to be rejected. People are now getting replies like this: "Your request to update Ticket 3536 could not be processed because the ticket could not be located in the help desk database." So, I've set the timeout back to 60.

Thanks. I'll try this.

Resolution found via WHD and a very secure O365. Had to put our two WHD processing emails into an exception to use basic authentication instead of modern authentication.

I've had this issue for years through many versions of WHD and multiple support tickets without a permanent resolution. Currently on 12.5.1 - Build #12.5.1.88 This happens multiple times a day. Most of the time it resolves itself and I don't need to go into settings and re-save like you are doing. But sometimes I do. I can…