Note: The following below may not be true if using >9.1 as the http header now again contains “WTOS”. then the HTTP header will be one of the following: **Update 8/2021 #2 ** If ThinOS is using the built-in web browser to connect to an MFA site, for example, Okta, Duo, etc. 1 User-Agent request header has been changed to: CitrixReceiver/18.4 (X11 Linux x86_64) WTOS/9 (Release) X1Class CWACapable (‘Warthog/ ′ was replaced with: ‘WTOS/9’) 0 User-Agent request header is: “CitrixReceiver”/ 18.4 (X11 Linux x86_64) Warthog/ (Release) X1Class CWACapable The ThinOS 8.x User-Agent request header is: CitrixReciever WTOS/1.0
In more than one case, it’s been an issue with the existing Netscaler Session Policy that was setup specifically for Wyse devices and contains information from the ThinOS 8.x User-Agent HTTTP/S request header that may no longer apply to ThinOS 9. I’ve run into a few issues lately where customers are currently using ThinOS 8.x successfully with Citrix Netscaler/ADC but having issues connecting with Dell Wyse ThinOS 9.x.
