Support Opera browser in device policy with Azure AD Conditional Access
Without any warning, using the Opera browser for accessing Microsoft SharePoint sites has stopped working and the user is presented with a "You can't get there from here" error message including a message stating
"The current browser is not supported, please use Microsoft Edge, Internet Explorer or Chrome to access this application."
From what I can see, this is due to some new policy being applied and only the browsers listed at https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/concept-conditional-access-conditions#supported-browsers can be used.
This is quite limiting for the user's freedom to select any browser from any company. If there are well documented ISO standard that the browser must support, please list those in the documentation. Please address this shortcoming, so more browsers can be used.
Rainer Kagerer commented
The most frustrating topic on this issue - there is even effort spent to ensure - alternative browsers are not able to "work" around being still able to be used. There was a workaround possible to allow still to use opera - which is now being stopped.