Hi,
Can anyone help?
Application has been shared with around 100 members of staff who are actively using it each day with no problems.
This morning however users who have not previously used the application have reported issues with being unable to connect to the services required.
And are receiving the following screen

After trying to press the sign in button users get the following error:

All users who have used the application before today and allowed the connections have reported no issues with the application.
Any help would be much appreciated
Thanks