SEP Client not registering as a GUP

Hi,

We are running SEPM 12.1.671.4971 with a GUP of 11.7.0000

this was working fine up intil the 2nd of Febroary and all of a suddent the GUP is not registered in the SEPM anymore. If I go to the properties of the client is shows "Group Update Provider: False".

We use location awareness and I have confirmed that the SEP client is detecting the correct location and is picking up the correct policy (using the policy serial number) however it still will not register as a GUP.

Can anyone help me on this?