RDP certificate thumbprint not showing

Hello,

We re using azure for past 2 months, Everything was going well,

Suddenly one vm we are not able to take the RDP.

I checked in dashboard and noticed there is 0 bytes of network in and out,

and also found there is no record of rdp certificate thumbprint and host name.

Also tried to ping from other vm but no response.

Can any one help me in this.

Regards,

Abhishek