Why you should not upgrade your WebEx to 2.7

… Until you retire the last computer using Windows 7 in your company, or even until your last customer stop using it.


So here we are.

Webex development team decided to drop support of TLS 1.0 for security reasons.

Here’s an excerpt from the CWMS 2.7 Release Notes :

TLS Support

CWMS Release 2.7 supports TLS 1.1 and later; TLS 1.0 is not supported, with one exception. Client connections to an SMTP server using TLS 1.0 are supported.

And as I far as I’m concerned, Windows 10 general adoption is still so far from being a reality. Moreover, as far as I know, Windows 7 is not yet (at least today) End of Support.

Since that by default, Windows 7 Internet Options only support TLS 1.0 and earlier versions of SSL. (unless you check TLS 1.1 and TLS 1.2), a default common configuration of Windows 7 won’t be able to connect to a WebEx meeting hosted on CWMS 2.7

Given that changing a such company-wide parameter is not easy at all, and that since Webex is not only meant for internal users, but also for guest and external users (that we need to give the easiest possible webconferening user experience and are more likely to have Windows 7 than any other OS), I think that Cisco should have simply said “Windows 7 is not supported with CWMS 2.7”. It would be quite simpler and more alarming for administrators who attempts to upgrade their CWMS System (2.6 to 2.7 shouldn’t be that difference)

I have seen many other situations where Cisco dropped support for OS/Browsers for far less limitations that this.

Yes, I’m not happy. I’m going to fresh reinstall CWMS 2.6 tomorrow after an entire week to deploy CWMS 2.7 😦


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