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Is this a new installation?<br />
<br />
If you logon with old legacy vSphere Client?<br />
<br />
Does it work?
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<div>
Hey Andrew. Installed over a year ago as an upgrade. <br />
Works fine with the Desktop Client but all users affected with the Web Client.<br />
Thanks, as always, for any pointers.
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What changes have been made in the environment recently? Also is the the vcenter appliance or Windows based
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Probably another broken Windows vCenter Server!<br />
<br />
Windoze Updates!
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It was Windows alright!<br />
<br />
Just reinstalled the Web Client.
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<div class="content wysiwyg-content">
Hey guys.<br />
<br />
On 5.5. Encountering the following when connecting to the Web Client. All users affected. <br />
<br />
Have tried restarting the IS service, re-registering vC with the IS and resetting the IS DB. Still no change.<br />
<br />
I did note a lot of the following in the logs: <br />
<br />
Authenticate-Challenge Token header missing<br />
<br />
Could be related to a certs issue? Any ideas?<br />
<br />
Thanks!
</div>
</div>


Hey guys.

On 5.5. Encountering the following when connecting to the Web Client. All users affected. 

Have tried restarting the IS service, re-registering vC with the IS and resetting the IS DB. Still no change.

I did note a lot of the following in the logs: 

Authenticate-Challenge Token header missing

Could be related to a certs issue? Any ideas?

Thanks!

Is this a new installation?

If you logon with old legacy vSphere Client?

Does it work?

Hey Andrew. Installed over a year ago as an upgrade. 
Works fine with the Desktop Client but all users affected with the Web Client.
Thanks, as always, for any pointers.

What changes have been made in the environment recently? Also is the the vcenter appliance or Windows based

Probably another broken Windows vCenter Server!

Windoze Updates!

It was Windows alright!

Just reinstalled the Web Client.

Client is not authenticated to VMware Inventory Service.

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

Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.