The portal is having issues getting an authentication token. The experience rendered may be degraded.

Hi all,
I am getting below error in Azure portal. 


Experiencing authentication issues
The portal is having issues getting an authentication token. The experience rendered may be degraded.

Additional information from the call to get a token:
Extension: microsoft_aad_protectioncenter
Resource: self
Details: Too Many Requests
------------------------------------------
Experiencing authentication issues
The portal is having issues getting an authentication token. The experience rendered may be degraded.

Additional information from the call to get a token:
Extension: microsoft_azure_support
Resource: self
Details: Too Many Requests

Any experience with this here? 
What may be the reason?