[400] an error occured while sending an authorization request to the vcenter SSO Server. AFD Native

[lspin]

Trying to help out my new employer with an issue accessing one of their vCenters. From what I gather, they've been running vcsa 6.5 with an external PSC 6.5. At some point they loss connectivity to the vsphere web-client and receive the following error:

"[400] an error occurred while sending an authorization request to the vcenter SSO Server. AFD Native Error occurred 9234"

Haven't been able to find this specific error anywhere on the net. 

We've tried shutting down the vcsa, reboot the PSC, and bring back up the vcsa. No luck. 

[lspin · Accepted solution]

Update: We've figured it out by resetting the machine account password using the below kb. 

https://kb.vmware.com/s/article/214280

Also, found the below kb that provides the 'reset_machine_pw.sh' shell script to complete the same password reset action.

https://kb.vmware.com/s/article/70756

Hope this helps anyone with the same issue.