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Try &nbsp;/var/log/messages file on the ESXi host. Hope this helps!
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Try  /var/log/messages file on the ESXi host. Hope this helps!

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DOH! &nbsp;I didn't even think to check the underlying OS. &nbsp;I'll give that a shot.
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DOH!  I didn't even think to check the underlying OS.  I'll give that a shot.

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Do you have vCenter or all the hosts are standalone?<br />
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If you have vCenter then you can configure from vCenter.
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Do you have vCenter or all the hosts are standalone?

If you have vCenter then you can configure from vCenter.

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I have multiple VM Hosts (ESXi 4.1 and 5.0) configured and am having issues with authenticating admins through AD. &nbsp;I join to the the domain successfully and have the ESX^Admins group added. &nbsp;Some boxes work and some don't. &nbsp;The strange part is, some boxes that used to work are no longer working.<br />
<br />
Are there any logs and I can peruse to try to find the problem? &nbsp;I've looked through the obvious ones and can't find anything out of the ordinary.<br />
<br />
Thanks!
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I have multiple VM Hosts (ESXi 4.1 and 5.0) configured and am having issues with authenticating admins through AD.  I join to the the domain successfully and have the ESX^Admins group added.  Some boxes work and some don't.  The strange part is, some boxes that used to work are no longer working.

Are there any logs and I can peruse to try to find the problem?  I've looked through the obvious ones and can't find anything out of the ordinary.

Thanks!

AD Authentication on ESXi servers not working

VMware, a software company founded in 1998,  was one of the first commercially successful companies to offer x86 virtualization. The storage company EMC purchased VMware in 1994. Dell Technologies acquired EMC in 2016. VMware’s parent company is now Dell Technologies.

VMware has many software products that run on desktops, Microsoft Windows, Linux, and macOS, which allows the virtualizing of the x86 architecture.  Its enterprise software hypervisor for servers, VMware vSphere Hypervisor (ESXi), is a bare-metal hypervisor that runs directly on the server hardware and does not require an additional underlying operating system.

VMware

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.