Can anyone shed any light on this issue. For over a year now I have been signing into Yammer with my corporate credentials, backed by Azure AD, all worked fine. However recently I have started getting this error:
You don't have a license to use Yammer with the account assigned to you by your work or school. Ask your admin to assign one to you.
I assume something has been done at the O365 level to cause this, the issue I have is not that this breaks access to my corporate network, but that I am also a member of a number of external networks provided by Microsoft, and I can no longer access these. These networks are used by many people and do not, as far as I know, require a licence. How can I get access back to these networks?