Android Tablet / Sophos Firewall SSO

[Asgard]

Hi All

We have a number of Android tablets (v15) which we have set up using both Kiosk Mode and a Managed home screen. We seem to be hitting a roadblock that we cannot seem to navigate.

 

Edge

Launching Edge attempts to sign in then gives an error code just after 'signing you in and syncing' - Sign in failed (2285)

We have set a few policies including what we thinks is the right ones;

 

BrowserSignin = Enabled
SyncDisabled = False

 

But it still just point blank refuses to go pass this.

 

I dont want them to be able to sign into Edge, nor sync any settings as they are going to be used for quick devices to login, do some unifrog work and put them back.

 

We have ruled out a firewall issue by temporarily creating an exception for this group of devices. We deployed Chrome, but from looking it up it wont pass the same token to allow SSO.

 

So normally we would expect it to open up the browser (which bounces to our captive portal), they click Single Sign On and because our firewall is entra joined it passes them though with Edge, but not via Chrome.

 

Any tips gratefully welcome!