topic Re: Webex Desktop App Error - Security Certificate in Webex Meetings and Webex App

Webex Desktop App Error - Security Certificate

SThompson86 — Thu, 23 Feb 2023 17:05:39 GMT

Hello, I have a couple of users who are getting the error "Whoops! We didn't get the security certificate we expected" When they launch the Webex Desktop app. Unable to use application.

I have uninstalled and reinstalled the latest version to no avail.

Any further ideas?

Thank you.

Re: Webex Desktop App Error - Security Certificate

dtibbe — Thu, 23 Feb 2023 17:12:16 GMT

Haven't seen that yet my own.

Are you using a https proxy in your network that may does some deep packet inspection or stuff?

Re: Webex Desktop App Error - Security Certificate

SThompson86 — Thu, 23 Feb 2023 19:04:08 GMT

I am checking with our network admin now - I will let you know.

Re: Webex Desktop App Error - Security Certificate

SThompson86 — Thu, 23 Feb 2023 19:22:07 GMT

Ok, its our VPN client ZScaler. Do you know which Webex URLS do we need to whitelist on Zscaler?

Thanks for your help!

Re: Webex Desktop App Error - Security Certificate

dtibbe — Thu, 23 Feb 2023 19:30:43 GMT

There is a full guide on the network requirements for Webex services at https://help.webex.com/WBX000028782/

Re: Webex Desktop App Error - Security Certificate

SThompson86 — Thu, 23 Feb 2023 19:33:31 GMT

Thanks, I asked our admin to look it over.

Re: Webex Desktop App Error - Security Certificate

Emmanuel Akum — Mon, 27 Feb 2023 08:04:52 GMT

Hi, Did you manage to get this resolved?

Re: Webex Desktop App Error - Security Certificate

SThompson86 — Mon, 27 Feb 2023 11:45:10 GMT

Not yet, we have opened up a ticket with Cisco support for help. Their first recommendation was manually adding a few certificates to the users computer, but that did not fix it. It is something to do with our VPN client called zScaler. If I turn off the VPN client the Webex app works.

Re: Webex Desktop App Error - Security Certificate

richash — Mon, 10 Jul 2023 11:50:43 GMT

I am getting similar error, how did it resolve

Re: Webex Desktop App Error - Security Certificate

YMSINGH — Thu, 11 Apr 2024 10:04:17 GMT

Hi All, I am having same issue, were you able to resolve it??