Collector upload fails with error 404 Not Found

[cmortimer1]

I have a collector that was working fine and now for the past 2 weeks when trying to upload it comes back with a 404 not Found Error. We are running 2.8.1.3 currently. I have ran packet captures and see the bidirectional traffic between my collector and the Cloud and do not see anything getting blocked. I have verified connectivity to the Upload URL and get the message back "It Works" from the website. I have rebuilt the collector from the ground up and re-certified it multiple times in the Portal. Yet no matter what I still get 404 and cannot find anything to indicate why.

[cmortimer1]

No, can only login via the root and collector accounts after restarting the service. I have Bypassed the Proxy server and still getting the same results as above. Seeing I cannot configure it to use the Proxy, I just put an exception in the Firewall to go straight out and ignore the proxy. I can see a two-way handshake in the packet capture on the firewall, but it still will not connect to upload.

[Robert Jayakumar]

how did you manage to fix the issue? Please let me know the fix so that I can try the same in our environment and get this fixed.