I have three VMware ESXi 5.1 hosts that are being managed by one VMware vCenter Server 5.1.0. I am continuing to fight a probelm related to Active Directory Authentication with vSphere Client to the vCenter Server.
PROBLEM:
When logging in to vSphere Client to vCenter Server and using the "use Windows session credentials" checkbox, or Active Directory Authentication, I am getting an error stating "A general system error occurred: Cannot get user info"
BACKGROUND INFO AND TROUBLESHOOTING STEPS TAKEN SO FAR:
- I can login as root without any problem, and can log into each of the three ESXi hosts with Active Directory without any problems.
- I have checked DNS, and can perform a forward and reverse DNS lookup with nslookup.
- I have checked the date and time on the vCenter Server and compared it with the virtualized windows 2008 R2 SP1 Active Directory Server running on VMHOST1. The servers are a few seconds off, but should not fail the Kerbos 5 min tolerance that is allowed for authentication.
- I have also gone into the Web GUI and set the vCenter Single Sign On Identity Source as indicated in the following web links, and added several domain groups as authenticated users to the vCenter Server...
- On each of the ESXi hosts, I set the uservar variable under Configuration Tab > Advanced > UserVars.ActiveDirectoryPreferredDomainControllers to our virtualized windows 2008 R2 SP1 Active Directory Server running on VMHOST1.
I was working fine just yesterday, and then today I lost the ability to login again with AD credentials. Can someone please direct me to fixing this annoying problem?