After upgrading, Web behave erratically such as not fully loading pages and displaying

[dinesh_amilinen]

Hello,

We upgraded to Splunk 7.1.1 and The web interface behaves randomly. Really randomly:
- It tells me I have unsupported browser
- It lets me log in normally or it loads a page correctly
- It does not loads pages or icons
- It is not accessible at all

I am accessing it through WAN link so the connection may be slow. I tried to remove the DB connect and it did not help. It is fresh installation -- no upgrade. I need the web to configure DB connect :(.

The only line found in logs:
06-06-2017 11:21:15.827 -0400 WARN HttpListener - Socket error from while idling: Read Timeout

Some screen shots:

[vinkumar_splunk]

Check and confirm if you're using chrome latest version.
Also, have you tried with other browsers? Like Firefox

[richgalloway]

Please clarify. You said you upgraded, but then you said it's a fresh installation. Which is correct?
If you upgraded, what version did you upgrade from?
Which browser are you using? Did you try a different browser?
Is there a proxy server or load balancer between you and Splunk?

[dinesh_amilinen]

It is a upgrade, After the upgrade from 6.2.2 to 7.1.1 using a tar file on linux machine
I am using Chrome
No there is no load balancer or proxy server