vSphere Web Client isn't accessible after vCenter Server 6. upgrade logo

In my previous post vCenter Server 6.* Upgrade I described process of upgrading vCenter Server 6.*. Right after upgrade I noticed that I can’t connect to vCenter Server using vSphere Web Client. It was a bit odd behaviour but I wanted to fix it.

Error I saw in browser was the following:

Here is the wirgo.log located in C:\ProgramData\VMware\vCenterServer\logs\vsphere-client.

In the logs there is one entry that is very interesting.

vSphere Web Client isn't accessible after vCenter Server 6. upgrade - 2

vSphere Web Client was running as NT Service\vspherewebclientsvc and it didn’t have correct permissions in C:\Program Files\VMware\vCenter Server\WebClient\server\work directory. Adding NT Service with full rights access to folder didn’t help as well. I changed it to main domain account (it could by any account with rights logon as a service and local admin rights on vCenter Server) and restarted vSphere Web Client.

Finally it started without any problems. I hope this might help someone else who might help same problem with vSphere Web Client and

vSphere Web Client isn’t accessible after vCenter Server 6.* upgrade – error 503 Service Unavailable
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Wojciech Marusiak
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Wojciech Marusiak

Solutions Architect at Alibaba Cloud
I am innovative and experienced VMware and Windows Server Engineer with over 10 years in the IT industry specializing in VMware virtualization and Microsoft Server environment.

My experience and skills have been proven by leading vendor certifications like VMware Certified Implementation Expert 6 – Data Center Virtualization, VMware Certified Advanced Professional 6 – Data Center Virtualization Design, VMware Certified Professional 6 - Data Center Virtualization, VMware Certified Professional 6 - Network Virtualization, AWS Certified Solutions Architect - Associate, ITIL V3, VMware vExpert 2014 - 2017 and VMware vExpert NSX 2017 Award.

My blog wojcieh.net - was voted #43 in Top vBlog 2017 contest!
Wojciech Marusiak
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